Santorum: Iowa boost can change race's tone

INDIANOLA, lowa - December 31, 2011

The former Pennsylvania senator met Saturday with a room full of activists and a mob of reporters as he opened a five-stop swing through southern Iowa. He says that if he gains momentum a host of social and economic issues will be in play in the race.

Santorum is fighting rival Rick Perry to become the conservative alternative to front-runner Mitt Romney.

Also on Saturday, Santorum began airing a new television commercial in Iowa touting himself as a "full spectrum conservative" who has the best chance of beating President Barack Obama. The same commercial starts airing Monday in New Hampshire.

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