NBC News: Romney wins Michigan GOP primary, holds off Santorum challenge

Updated
 
NBC News: Romney wins Michigan GOP primary, holds off Santorum challenge
NBC News: Romney wins Michigan GOP primary, holds off Santorum challenge

BREAKING NEWS:  NBC News declared Mitt Romney tonight as the projected winner in Michigan. 

The former Massachusetts governor defeated Rick Santorum, who had waged a hard-fought battle for the state. Michigan is critical for Romney because it is the first of the nation’s industrial battleground states to vote in the Republican nominating race – and it is also his home state.

Earlier Tuesday night, Romney easily won the Arizona Republican primary.

Michigan and Mitt Romney

NBC News: Romney wins Michigan GOP primary, holds off Santorum challenge

Updated