(CNN) - Seventy delegates were at stake in Tuesday's Republican presidential contests, the largest haul to date in the race for the White House. Mitt Romney, Newt Gingrich, Rick Santorum and Ron Paul vied for the delegates up for grabs in the Colorado and Minnesota caucuses. No delegates were are at stake in the non-binding Missouri primary.
Read below for reporting from our reporters and producers. Follow real-times results at CNNPolitics.com and on Twitter at #cnnelections. Read more here.
1:11 a.m. ET - @JohnKingCNN: Wow. A trifecta for @ricksantorum. The CO win especially thump to @MittRomney #cnnelections yfrog.com/kep7eykj
1:07 a.m. ET - @David_Gergen: The Romney bandwagon just went in a ditch. #CNNElections
1:06 a.m. ET - @DanaBashCNN: Wow. Colorado gop chair just said santorum wins that state.
1:05 a.m. ET - @AriFleischer: There are no delegates won tonight; but there is a new winner. Just watch the boost the press gives Santo – for a day or two
1:04 a.m. ET - Ryan Call, Colorado GOP chair, declared Santorum the winner of the Colorado caucuses.
1:01 a.m. ET - @PrestonCNN: BREAKING NEWS - HAT TRICK: Bobby Orr STYLE! Rick Santorum has won the Colorado Caucuses Colorado, Missouri, Minnesota
12:33 a.m. ET - @JohnKingCNN: Now @MittRomney narrow lead as denver area comes in, but @ricksantorum in striking distance. yfrog.com/o09yyiohj
12:20 p.m. ET - @rolandsmartin: What did I say Saturday night? Romney got several points less in Nevada than when he blew everyone away in 2008. Tonight... He is losing states, and in them, counties he won in 2008. GOP voters are not enthused with Romney as the candidate.
12:18 p.m. ET - @rolandsmartin: I also made clear that everyone needs to stop with the Romney juggernaut nonsense after Florida and Nevada. Tonight is Exhibit B
12:17 a.m. ET - @rolandsmartin: These election results are hilarious. I told everyone that Santorum & others should not drop out of the race. Tonight is Exhibit A
12:10 a.m. ET - @EWErickson: Three cheers for a brokered convention!!!!
12:01 a.m. ET - With 46% of precincts reporting in Colorado, Santorum received 41% of the vote, followed by Romney with 30%, Gingrich with 16% and Paul with 13%.
11:54 p.m. ET - @DanaBashCNN: Santorum told me he'll be competing everywhere. Says he has to keep winning to show he can be alt to Obama. Intv On CNN soon #cnnelections
11:47 p.m. ET - @DanaBashCNN: Just did an intv w Rick santorum. He told me now we are in "no mans land".
11:45 p.m. ET - @stevebruskCNN: Secret Service pulls Romney away from someone on rope line - person hustled out of room as Romney continues shaking hands
11:43 p.m. ET - @KevinBohnCNN: Feb. 7 not a great day for Romney. 4 yrs ago he suspended his campaign at CPAC speech. Tonite he loses at least two contests. #CNNElections
11:42 p.m. ET - Romney chronicled his father's rise to success, in spite of never having graduated from High School.
"There were a lot reasons my father could have given up or set his sights lower. But Dad always believed in America," Romney said of the late George Romney. "For my Dad, America was the land of opportunity, where the circumstances of birth are no barrier to achieving ones dreams. In Dad's America, small business and entrepreneurs were encouraged, and respected."
11:38 p.m. ET - @streitfeldcnn: Despite a capacious buffer zone, there is empty space at the back of Romney's Colo HQ. He opens speech w reminder he drew 2800 ppl yesty
11:37 p.m. ET - @jimacostacnn: Romney's scripted speech teases Obama's convention address in Denver. Not the best night to draw that contrast.
11:36 p.m. ET - @stevebruskCNN: Rick Santorum, check your voice mail! Campaign spokesman says Gingrich called and left message for him. Romney left one earlier.
11:35 p.m. ET - @joejohnscnn reports Gingrich left a voicemail for Santorum at 10:30 p.m. ET, according to press secretary RC Hammond.
11:34 p.m. ET - Speaking to supporters as his campaign headquarters in Denver, Romney said he's "pretty confident we'll come in number one or number two" in Colorado.
11:32 p.m. ET - @jimacostacnn: Josh Romney on stage, filling in for Ann Romney tonight. Says mom is getting some well deserved rest.
11:29 p.m. ET - @EWErickson: Conviction always ultimately trumps electability. See Bush v. Kerry. See tonight.
11:26 p.m. ET - @EWErickson: Romney aggressive attacking Santorum gives validity to Newt's whining about nastiness and makes Romney seem petty like Newt is portrayed. Suddenly Romney could be seen as nasty as your typical Romney supporter on twitter or at the Washington Post.
11:22 p.m. ET - With 26% of precincts reporting in Colorado, Santorum leads with 42% of the vote, followed by Romney's 31%, Gingrich's 15% and Paul's 12%.
11:20 p.m. ET - @EWErickson: I think an aggressive Romney attack against Santorum hurts Romney.
11:19 p.m. ET - @deirdrewalshcnn: Sen Santorum and his wife Karen work the ropeline in St Charles, signing signs, campaign buttons yfrog.com/nvur7syj
11:18 p.m. ET - @JohnKingCNN: Colorado counting in the IA and NV tradition! stuck at 11% for long time. But hearing technical issues near resolution. #CNNelections
11:11 p.m. ET - @PeterHambyCNN: battleground states won so far by Santorum: Iowa, Missouri, Minnesota. Romney: New Hampshire, Florida, Nevada. Newt: none. Paul: none.
11:10 p.m. ET - Paul told supporters at his campaign headquarters in Golden Valley, Minnesota that he expects the success of his campaign to continue. Next up? Maine, which holds its caucuses on February 11th.
11:09 p.m. ET - @PeterHambyCNN: open caucus good makes for a good night for Paul in Minnesota. Not so in Colorado, where it's closed to Rs only.
11:08 p.m. ET - @jimacostacnn: Romney campaign source confirms he called Santorum to congratulate but did not connect. Left a message. #cominnsouri #CNNElections
11:04 p.m. ET - Paul came in second in Minnesota, CNN projected.
11:02 p.m. ET - @deirdrewalshcnn: Acknowledging the non-binding primary in MO, Santorum says "we're not done with you yet in Missouri" #CNNElections
11:00 p.m. ET - @ErinBurnett: Standing right behind #santorum is his top #superpac donor #FosterFriess (green tie). Is this appropriate?
10:59 p.m. ET - @stevebruskCNN: And in a not very veiled swipe at Romney, Santorum says he cares about the very rich "and the very poor"
10:58 p.m. ET - @DanaBashCNN: Take that mitt: Care not 99 and 95 percent. Very rich and v poor #cnnelections
10:57 p.m. ET - @YellinCNN: Santorum in speech adopts a general election posture says Pres Obama "thinks he's smarter than you" "thinks he knows better".
10:55 p.m. ET - @DanaBashCNN: "We pick rick" and applause loudest for santorum saying he's running as conservative alt to obama, not romney #cnnelections
10:54 p.m. ET - "I don't stand here to be the conservative alternative to Mitt Romney, I stand here to be the conservative alternative to Barack Obama," Santorum said in Missouri.
He said Tuesday's results are a preview of the fall election.
10:53 p.m. ET - @alexcast: santorum speeches prove that it is easier to talk when you believe in something passionately
10:52 p.m. ET - @PrestonCNN: Long time Santorum strategist John Brabender tells me: The Show Me State showed us tonight that when Rick Santorum gets a 1-on1 shot at Mitt Romney, Rick Santorum wins in dramatic fashion.
10:50 p.m. ET - Santorum told his supporters that their votes were heard across the United States and "maybe in Massachusetts were heard particularly loud tonight." And his message to 1600 Pennsylvania Avenue? "You better start listening to the voice of the people," Santorum said.
10:48 p.m. ET - Santorum took the stage at his campaign headquarters in St. Charles, Missouri, saying "conservatism is alive and will in Missouri and Minnesota."
10:45 p.m. ET - @DanaBashCNN: Endorsements? Not so much. Tim pawlenty didn't deliver minn for romney. nikki haley didn't deliver sc for romney #cnnelections
10:42 p.m. ET - @stevebruskCNN: Interesting points from @peterhambyCNN: Romney won Minnesota in '08, flew there morning after Florida, and did polling there
10:40 p.m. ET - @JohnKingCNN: So now the fight for #co2012 @MittRomney up 2 votes w/11% in. #coffeetime #CNNelections pic.twitter.com/oLchzbzm
10:38 p.m. ET - @ErinBurnett: Election to date #Romney #superpac has outraised #Santorum Superpac 41 to 1. Will that change after tonight's victories? #cnnelections
10:37 p.m. ET - @David_Gergen: Do think there is justice in Santorum getting a second shot at the brass ring after he was denied a clear triumph in Iowa. #CNNElections
10:36 p.m. ET - @JohnKingCNN: Add MN to @ricksantorum win list 2nite. CO a must win 4 @MittRomney #CNNelections pic.twitter.com/efNs9trr
10:34 p.m. ET - @AriFleischer: Even tho no delegates awarded tonight, money will come in for Santorum tomorrow.
10:32 p.m. ET - Santorum won the Minnesota caucuses, CNN projected.
10:27 p.m. ET - @jimacostacnn: Romney had tentative plans to visit Minnesota between Nevada and tonight. But scrapped that and sent T-paw instead. Blamed sked issues.
10:19 p.m. ET - @DanaBashCNN: Its snowing here in the show me state. Good thing santorum is already in the building #cnnelections
10:08 p.m. ET - "Red, White and Blue," the super PAC supporting Santorum's candidacy issued a press release Tuesday congratulating their candidate on his win in Missouri, where they ran ads.
"When Republicans are given the choice between a principled conservative and a calculated convert to conservatism, principles win big," the statement read.
10:05 p.m. ET - @AriFleischer: From 4 days ago: If I was Santo, I'd make MO a fight, even tho no delegates at stake. Newt is not on ballot, so it's a Santo v Romney
10:03 p.m. ET - @David_Gergen: If Colorado goes for Santorum, major upset. Way too early to call...also worth remembering Romney got 60% in 2008 in Colorado.
10:02 p.m. ET - Responding to Tuesday's results, Romney spokesperson Andrea Saul told @jimacostacnn: "Part of the process. No delegates."
9:59 p.m. ET - @JohnKingCNN: 08' #magicwall flashback: romney won Minnesota big. 2nite running 3rd w/13% vote in. #cnnelections yfrog.com/nzt5pbnj
9:56 p.m. ET - @JohnKingCNN: 34% of vote in st louis county _ critical gop suburbs _ and santorum has 17 pt edge. #cnnelections yfrog.com/gyi4vvij
9:55 p.m. ET - @LisaDCNN: SANTORUM leads in all 3 contests at the moment. In MN it's Santorum 44%, Paul 27% (12% reporting). CO is Santorum 50%, Romney 21% (1% in)
9:53 p.m. ET - @jimacostacnn: Vegas this is not! So far small Romney crowd. Really small. #cominnsouri pic.twitter.com/baKJHtiK
9:44 p.m. ET - @deirdrewalshcnn: Crowd at St Charles, Missouri event cheering wildly as CNN calls Santorum winner of the non-binding primary #CNNElections
9:43 p.m. ET - Santorum won the non-binding Missouri primary, CNN projected.
9:38 p.m. ET - @mjaconicnn: Vote boards now showing @RickSantorum leading across the board: Colorado, Minnesota, Missouri but only 1%, 7% and 22% reporting #upset?
9:23 p.m. ET - @JohnKingCNN: Just 1% of CO vote, 3% Minn, 15% Missouri; NOT the map @MittRomney wants to see by end of night. yfrog.com/gy6h0hfuj
9:21 p.m. ET - With 13% of Missouri precincts reporting, Santorum leads with 52% of the vote, followed by Romney at 27% and Paul at 12%. Gingrich is not on the ballot.
9:19 p.m. ET - A Missouri state official told @KevinBohnCNN: "After seeing the initial returns coming in, it's apparent turnout will be significantly lower than predicted."
9:18 p.m. ET - @DanaBashCNN: Big ballroom here for santorum in missouri but long way from full. Or close to it #cnnelections pic.twitter.com/3qx12ndX
9:15 p.m. ET - @JohnKingCNN: Big Santorum edge, but 10% & v little from strong romney areas near KC/STL suburbs. #cnnelections yfrog.com/od6fozqj
9:12 p.m. ET - @David_Gergen: Upsets may well be unfolding with Santorum ahead in Minn and Missouri. Lots of votes to go. # cnnelections
9:11 p.m. ET - @JohnKingCNN: Impt to remember Missouri results mean NOTHING re delegates, but would be big moral victory for Santorum if he wins. #cnnelections
9:06 p.m. ET - With 6% of the precincts reporting in Missouri, Santorum leads with 51% of the vote, followed by Romney with 28% and Paul with 11%. Gingrich is not on the ballot in the Show Me State.
9:02 p.m. ET - @DanaBashCNN: Turnout low in missouri? State committeeman tells me he was 46th vote at precinct at 3p. In other times he would be 46th @ 8a #cnnelections
8:58 p.m. ET - @deirdrewalshcnn: "Fear the Vest" buttons selling well at Santorum event in St Charles, Missouri #CNNElections yfrog.com/odhm0qj
8:50 p.m. ET - @DanaBashCNN: Santorum 2 Texas 2morrow.Why? "that's where the money is" an adviser tells me. Says donors there want 2 give & want 2 meet him #cnnelections
8:48 p.m. ET - @JohnKingCNN: If #magicwall had tracked '76, Ford_Reagan GOP race. Prez Ford won by 117 delegates. #cnnelections yfrog.com/es533xfj
8:46 p.m. ET - @jimacostacnn: Another formal speech tonight from Romney? Prompters up. #cominnsouri pic.twitter.com/vaROkxCQ
8:42 p.m. ET - @LisaDCNN: MINNESOTA: w/ just 1% reporting – it's Santorum 48%, Paul 24%, Romney 16%, Gingrich 12%. (Caution – that's just a few hundred votes)
8:31 p.m. ET - Addressing a caucus in Maple Grove, Minnesota, Paul detailed his personal and political background. He stressed his history as a proponent of the constitution, spending cuts and civil liberties and against foreign wars.
8:22 p.m. ET - @ShanTravisCNN reports Paul is planning to address caucus-goers in Maple Grove, Minnesota after local elected officials address the group and before voters break-off into sub-groups to discuss the 2012 Republican candidates.
8:08 p.m. ET - @David_Gergen: Watch tonite : is Romney electable in Midwest (Minn, Missouri)? If Obama wins big in Midwest, almost the ball game. #CNNElections
8:06 p.m. ET - See a ballot from a precinct in Castle Rock, Colorado here.
8:02 p.m. ET - @jimacostacnn: Quiet night so far from Team Romney. No emails on sked, endorsements, or surrogate attacks on rivals in about five hours.
8:00 p.m. ET - @stevebruskCNN: Gingrich to Wolf Blitzer: "at the rate we're going you could have the first open convention since 1940"
7:55 p.m. ET - Gingrich reiterated his plan to be even with Romney among delegates by the Texas contest on April 6th. He said he spoke to Texas governor and former presidential candidate Rick Perry Tuesday and that the campaign is strong in the Lone Star State.
7:52 p.m. ET - Gingrich said he hasn't given up on winning the states Tuesday, but told @wolfblitzercnn he's looking forward to other early voting states, including Ohio, Arizona, Tennessee and Michigan.
7:45 p.m. ET - @crowleyCNN: CampRomney memo: can't win'em all Paul says movin'on even if no wins 2nite Newt's in OH. (no contest 2nite) Santo feels great #T leaves
7:24 p.m. ET - Bachmann said the Minnesota caucuses "literally could go to any of the four candidates."
And although she said she doesn't regret dropping her White House bid, she did say, "I miss the debates most of all."
7:21 p.m. ET - Former presidential candidate and Minnesota Rep. Michele Bachmann said she did not participate in her state's caucuses because she was doing her job in the House. She told @wolfblitzercnn she "would be if I could."
7:17 p.m. ET - @stevebruskCNN: Where next? Romney campaigns (and raises $$) in Atlanta tomorrow. Gingrich tours Cleveland plant. Santorum holds events in Dallas area.
7:03 p.m. ET - @mjaconicnn: More delegates at stake tonight than any other night in the campaign so far #CNNelections
7:00 p.m. ET - Caucuses in Minnesota convene at 8 p.m. ET and meet for at least one hour. Caucuses in Colorado convene at 9 p.m. ET. Polls are open in Missouri between 7 a.m. and 8 p.m. ET.
6:40 p.m. ET - In 2008, Romney won the Colorado GOP caucses with 60.3% of the vote, followed by Sen. John McCain with 18.5%, former Gov. Mike Huckabee with 12.8% and Paul with 8.4%. Romney also captured the Minnesota caucuses with 41.6% of the vote to McCain's 22.1%, Huckabee's 20% and Paul's 15.8%. Eventual Republican nominee McCain came out on top in Missouri capturing 33% of the vote, followed by Huckabee at 31.5%, Romney at 29.3% and Paul with 4.5%.
6:30 p.m. ET - @David_Gergen: What looked like sleepy night now has real drama: could Romney lose 2 of 3? Join us #cnnelections.
6:24 p.m. ET - @donnabrazile: Let me add red wine and interesting results. RT @AriFleischer CNN's election coverage goes until midnight. Pls send food – and a martini.
6:20 p.m. ET - @AriFleischer: It's an old style nite bcause there are no exit polls. Usually we have a good sense of how it's going. Tonite it's just results.
6:15 p.m. ET - When discussing his chances Tuesday, Paul told @JohnKingCNN "Well we're gonna win some delegates, whether we come in one or two or three, I don't know exactly that."
"But we feel positive about moving along and picking up more delegates. We'll have to wait and see," Paul added.
5:37 p.m. ET - @DanaBashCNN: This is where Rick santorum will be standing tonite. Ballroom way bigger than other elex night events #cnnelection pic.twitter.com/ObGJBw2D
4:47 p.m. ET - @KevinBohnCNN: Anecdotally there are reports of light turnout in Missouri for $7 mill non-binding primary; may not meet orig est of 23%. #CNNElection