TROY, Mich. - Employing a trick they used during the hotly contested Florida primary, the Romney campaign is deploying surrogates to Sen. Rick Santorum's campaign events.

At least two surrogates - former Michigan State Rep. Rocky Raczkowski and current State Rep. Aric Nesbitt from Kalamazoo - will be attending Santorum events throughout the state in the days leading up to the Michigan primary on Tuesday, a campaign official told ABC News. Other surrogates attended Santorum events held earlier in the week.

Nesbitt was spotted at Santorum's event this morning in St. Clair Shores.

Rep. Connie Mack, R-Fla., and Rep. Jason Chaffetz, R-Utah, were among those Romney surrogates who were dispatched to some of former Speaker Newt Gingrich's events in the days leading up to the Florida primary in January, Chaffetz on a few occasions butting heads publicly with Gingrich's spokesman R.C. Hammond.

While Santorum has yet to respond to the new faces at his campaign stops, Gingrich at the time had said he would have preferred Romney to come himself, rather than sending others on his behalf.

"If Romney wants to personally come to one of my events, I'd be delighted for Romney to personally come to one of my events," Gingrich said.

ABC News' Elicia Dover, Michael Falcone and Russell Goldman contributed to this report.