(CNN) – The fight for votes in Ohio, Super Tuesday's most sought-after prize, hasn't been pretty, according to an analysis of television ads airing in the state.
A breakdown of ads on broadcast television in Ohio from Kantar Campaign Media Analysis Group (CMAG), CNN's political advertising consultant, showed ads from candidates and the super PACs supporting their candidacies were overwhelmingly negative.
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The super PACs supporting Rick Santorum and Newt Gingrich both aired exclusively negative spots in Ohio. Neither candidate's campaign bought air time in the Buckeye State, according to the CMAG analysis.
The only positive spots airing in Ohio through Monday came from Mitt Romney's campaign, and the super PAC Restore our Future, which supports Romney. Positive spots accounted for 13% of the Romney campaign ads and 16% of Restore our Future's spots.
The only other two advertisers on broadcast television in Ohio were AFSCME, a labor union, and Priorities USA Action, the super PAC supporting President Barack Obama's reelection campaign. Spots from both those organizations were all negative.
Rick Santorum's campaign bought $376,869 in ads on cable television, according to a Republican media consultant. Cable ads aren't accounted for in CMAG analysis.