New Jersey Gov. Chris Christie (R) and former Minnesota Gov. Tim Pawlenty (R) will stump with Mitt Romney in New Hampshire on Sunday, Romneys campaign announced Friday afternoon.

The two are powerful surrogates — Christie is a popular Northeastern governor whom some Republicans hoped would run for president himself, while Pawlenty worked New Hampshire hard as a presidential candidate before he dropped out and endorsed Romney.

The former Massachusetts governor is the only candidate who has the backing of many big-name Republicans, giving him an advantage over his opponents because he can bring them out to stump with him.

Romney had Christie’s help in Iowa before the caucuses, along with Sen. John Thune (R-S.D.) and Reps. Jason Chaffetz (R-Utah) and Jeff Flake (R-Ariz.), who are popular with the Tea Party crowd.