Mitt Romney Makes Final Campaign Tour Through Iowa Ahead Of Caucuses

MARION, IA - JANUARY 02: Former Massachusetts governor and Republican presidential candidate Mitt Romney addresses supporters during a campaign rally at Pate Asphalt January 2, 2012 in Marion, Iowa. Polls show that Romney is leading a large field of GOP candidates going into Tuesday's "first in the nation" Iowa Caucuses. Chip Somodevilla/Getty Images/AFP