KYTX CBS 19 Tyler Longview News Weather SportsGOP candidates campaign in Michigan

(CBS) - The frontrunners for the GOP presidential nomination will both be campaigning for votes in Michigan today.

Mitt Romney is expected to get a key endorsement from the state's governor this afternoon.
Romney grew up in Michigan but recent polls show a surging Rick Santorum with an advantage there. Michigan holds its primary on the 28th.