Romney Wins Key N.H. Endorsement

ABC News’ Matt Stuart Reports: When former Massachusetts governor Mitt Romney files for the New Hampshire primary today in Concord, he’ll have a new ally by his side: New Hampshire  Republican Sen. Judd Gregg will endorse Romney’s presidential run later this afternoon.

In a press release today, Gregg said he was supporting Romney because he "embodies New Hampshire’s values."

The endorsement is a boost for Romney’s New Hampshire chances, as the state’s junior senator, Republican John Sununu, has said he will remain neutral through the primary season.

The endorsement isn’t a complete surprise — a key member of Romney’s New Hampshire team, attorney Tom Rath, also advises Gregg.

Both Gregg and Sununu previously endorsed President Bush in 2000.