(CNN) – As voters go to the polls in Michigan, the candidates and campaigns are already focused on Ohio which is shaping up to be the next major battleground as it votes in a week on March 6th as part of Super Tuesday.
Rick Santorum is making a quick detour Tuesday from his campaigning in Michigan for an afternoon rally in Perrysburg, Ohio. And the conservative Susan B. Anthony List will sponsor an Ohio leg of their bus tour supporting Santorum. On Wednesday, Mitt Romney's first stop after will be a rally in Toledo, Ohio, followed by a town hall in Bexley, Ohio, a suburb of Columbus.
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Since Ohio is the next Midwestern state up for grabs, analysts said it will be key for each candidate.
"If Santorum can demonstrate a Midwestern weakness for Romney, then he could get an influx of resources and this could drag out much longer. Ohio is all about general election electability whereas Michigan is likely to be Obama country in the general (at least as of right now)," Ford O'Connell, a Republican political consultant, said.
Meanwhile, the ad wars in the state are intensifying. Beginning Wednesday Romney has bought almost $700,000 in additional ad time in the state, according to a GOP consultant familiar with the buy. Through Tuesday it has bought just under $550,000 in the state, according to this consultant.
Romney is getting a major boost from the super PAC supporting him, Restore Our Future. Through the primary it has purchased $1.85 million in television and radio commercials. The pro Santorum super PAC, the Red, White and Blue Fund, started airing ads in the state last week and has bought $257,000 worth of time through Wednesday.
Santorum's campaign said it is running ads on cable in the state.
Because of a fresh infusion of cash, the super PAC backing Newt Gingrich, Winning Our Future, started airing ads Tuesday in several states, including Ohio.
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