Manchester, New Hampshire (CNN) - Mitt Romney has gained the support of three more New Hampshire sheriffs, CNN has learned.
Sheriffs Mike Downing, Craig Wiggin and Michael Prozzo will officially endorse Romney on Monday.
Two other sheriffs had already signed onto the former Massachusetts governor's campaign. There are ten sheriffs in the state, one for each county in New Hampshire.
Romney has long been considered the front-runner in New Hampshire, where he has racked up endorsements from two of three Republican members of the state's congressional delegation, as well as many local officials.
On Sunday he was passed over for one of the biggest coups for a presidential candidate - the support of New Hampshire's Union Leader. The influential state-wide paper threw its support behind former House Speaker Newt Gingrich, who has gained momentum in the state and said he hopes to become voters' alternative to Romney.