WASHINGTON -- The National Rifle Association threw support behind two Minnesotans on Wednesday hoping to serve in the U.S. House of Representatives: an incumbent Democrat and a Republican challenger.

Democratic Rep. Collin Peterson, who was earlier named best marksman in the U.S. Congress, garnered the endorsement of the NRA Wednesday. Peterson is running to keep his Seventh Congressional District seat against GOP challenger Torrey Westrom.

"Throughout his career, Collin Peterson has consistently opposed all attempts to ban lawfully owned firearms and magazines and has stood strong against the Obama-Bloomberg agenda, said Chris W. Cox, chairman of the NRA's Political Victory Fund.

This is an unusual move for the NRA, which almost always endorses Republicans, though the organization seems to like Peterson since this is the fourth time they've backed him. The only other known Democrat endorsed this week by the group is a Georgia congressman.

The organization also endorsed Republican Stewart Mills, who is running to unseat Democrat Rep. Rick Nolan in the Eighth Congressional District.

"Over five million active NRA members, many of them in our part of Minnesota, know that the Second Amendment is about so much more than just hunting -- and they know we need a representative who will stand up for those rights," Mills' camp said in a statement.