U.S. Presidential Campaign Trails (in chronology): ROM_13

(L-R) Jennifer Harper cheers while watching Republican Presidential candidate Mitt Romney (R-MA) take a slight lead over his rival, Rick Santorum (R-PA) in the battle for primary elections in Romney's home state in Novi, Michigan on Tuesday, February 28, 2012; and Scott Czasak screams out in joy while watching the results of primary elections in the home state of Republican Presidential candidate Mitt Romney (R-MA), as it is announced he has defeated his rival, Rick Santorum (R-PA) in Novi, Michigan on Tuesday, February 28, 2012.

(L-R) Jennifer Harper cheers while watching Republican Presidential candidate Mitt Romney (R-MA) take a slight lead over his rival, Rick Santorum (R-PA) in the battle for primary elections in Romney's home state in Novi, Michigan on Tuesday, February 28, 2012; and Scott Czasak screams out in joy while watching the results of primary elections in the home state of Republican Presidential candidate Mitt Romney (R-MA), as it is announced he has defeated his rival, Rick Santorum (R-PA) in Novi, Michigan on Tuesday, February 28, 2012.