(CNN) - The airwaves in Iowa were especially full in the last days before residents cast their votes in the Hawkeye State caucuses, according to a report from the Campaign Media Analysis Group.
The report showed Republican presidential candidate Rick Perry, who placed fifth in the contest, channeled the most funds into the state between Jan. 1 and the Jan. 3 voting date. The Texas governor spent approximately $1.91 million in the state as part of his $2.26 million total spending that included spots in New Hampshire and on national cable. "Make Us Great Again," a super PAC supporting his candidacy contributed an additional $844,890 into Iowa. They spent over $2 million in Iowa, South Carolina, North Carolina and Georgia.
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Rep. Ron Paul of Texas, who placed third in the first-in-the-nation caucuses, spent $997,370 in the state as part of his $1.62 million total ad spending during the same period that included buys in New Hampshire, Nevada, South Carolina and on national cable.
Former Massachusetts Gov. Mitt Romney, who won the Iowa caucuses by eight votes, focused the bulk, or $852,370 of his ad war chest in Iowa, spending an additional $557,660 in New Hampshire and South Carolina. The super PAC supporting Romney's candidacy, "Restore Our Future," spent $1.23 million in Iowa and an additional $519,000 in Florida and South Carolina during the three-day period.
Fourth-place finisher former House Speaker Newt Gingrich focused his entire ad budget of $475,130 during the three day period in Iowa, as did Minnesota Rep. Michele Bachmann, who suspended her campaign after a disappointing sixth place finish in the contest. She channeled $59,930 into the state. "Winning our Future," the super PAC supporting Gingrich spent $136,340 on ads in Iowa and "Citizens for a Working America," the super PAC backing Bachmann spent $179,200 in the state ahead of voting.
The campaign of Rick Santorum, the former Pennsylvania senator, who placed second in the contest, spent no money from his campaign on ad spending. But two super PACs supporting his candidacy spent $303,610 in Iowa.
Although former Utah Gov. Jon Huntsman did not compete in Iowa, or spend any campaign money on advertising, the super PAC backing his candidacy put $830,380 into spots in New Hampshire and the surrounding areas.
- CNN's Gabriella Schwarz & Robert Yoon contributed to this report.