(CNN) - A Republican state senator in Mississippi, who has mounted a primary challenge against U.S. Sen. Thad Cochran, touts his conservative credentials in first campaign television commercial.
The ad from Chris McDaniel comes six weeks before he faces off against the six-term incumbent in Mississippi's GOP primary. Cochran's campaign has already gone up with five spots over the past two months.
McDaniel is considered to have the best chance of any of the primary challengers from the right who are trying to unseat incumbent GOP senators this year.
The race has attracted a lot of attention both in Mississippi and across the country, and has seen a bunch of spending by outside groups.
In the commercial, McDaniel appears to take a shot at Cochran, saying near the top of the spot that "our politicians in Washington have forgotten our conservative Mississippi values."
The candidate goes on to say where he stands on some key issues: "Prayer in public school: Yes. Obamacare: No. Second Amendment rights: Absolutely. More wasteful spending: Not a chance. That's the type of constitutional conservatism we need in the Senate."
The campaign described the ad buy as "significant" and said the commercial would run statewide "on cable and broadcast."
While this is McDaniel's first paid ad on TV, he's enjoyed the support of two D.C.-based groups with a history of backing conservative challengers in GOP primaries. Both the Club for Growth and Senate Conservatives Fund have gone up with spots that tout the challengers and are critical of Cochran.
McDaniel will appear at two rallies this week hosted by Tea Party Express, one of the largest and most influential of the national tea party organizations. He's also been endorsed by 2008 GOP vice presidential nominee and former Alaska Gov. Sarah Palin, who remains influential with many grassroots conservatives.
McDaniel recently made some national headlines after controversial clips from old episodes of a radio program he once hosted were unearthed.
Cochran's team has been running ads this month that tout his conservative record and slam McDaniel for his views on government assistance programs and post-Hurricane Katrina disaster relief in the state.
And Cochran is also getting assistance from Mississippi Conservatives PAC, a pro-Cochran outside group that recently went up with a TV commercial accusing McDaniel of flip-flopping on the issues. The group says it has spent $650,000 to run that ad and two others.
The U.S. Chamber of Commerce is also running spots critical of McDaniel.
Political handicappers say Cochran, one of five remaining GOP senators facing a primary challenger (Sen. John Cornyn of Texas already won his primary), is the most likely to get pushed out of Congress by a fellow Republican.
"McDaniel has the best chance of any anti-establishment Senate hopeful to knock off an incumbent, and the defeat of Thad Cochran would send shock waves through both the national media and the Republican Party," wrote Stuart Rothenberg, editor and publisher of the nonpartisan Rothenberg Political Report.
Cochran announced in December he would run for a seventh term, about two months after McDaniel threw his hat in the ring.
Cochran raised about three times as much money as McDaniel during the first three months of this year.
CNN's Dana Davidsen contributed to this story