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Pablo Martinez Monsivais, Associated Press
In this photo taken Jan. 22, 2015, former Pennsylvania Sen. Rick Santorum poses for photographs during the March for Life anti-abortion rally in Washington. Santorum was undoubtedly an underdog the last time around in Iowa, and even he admits most voters probably don’t remember how he rallied to kick off the 2012 presidential election with a win in the state’s lead-off caucus Four years later, he’s again an underdog. And that suits him just fine.

DES MOINES, Iowa — Rick Santorum admits most people probably don't remember how he rallied to kick off the 2012 presidential election with a win in the Iowa caucus.

Four years later, he's still an underdog. That suits him just fine, even if his embrace of that role keeps his advisers up at night.

The former Pennsylvania senator says he's months away from making a decision about whether to run for president a second time.

That he's spending the next five days in Iowa is as sure a sign as any that he plans another run.

The trip includes delivering a speech Saturday at a forum hosted by Iowa Rep. Steve King that features several of Republican 2016 prospects.