Washington ? Democrats have again highlighted Kansas Rep. Dennis Moore’s congressional seat as one of the toughest to keep in party hands.

For the second year in a row, the Democratic Congressional Campaign Committee has named Moore to its “Frontline 10” — a group of House members who won their last election with just 55 percent of the vote or less.

The national fund-raising organization is urging other House members and major party donors to help Moore and nine other Democrats they consider particularly vulnerable to defeat in 2006.

“It is well known that Moore holds one of the most competitive districts in Congress,” DCCC spokes-man Greg Speed said Monday. “He’s done a great job of holding down the district running on his record, but it’s a highly competitive seat and we’re just showing all the support we can for him.”

Because his district in the Kansas suburbs of Kansas City, Mo., leans Republican, the House GOP has always targeted Moore. Yet the state’s lone Democrat in Congress won his fourth term in November by his biggest margin yet, defeating conservative Republican Kris Kobach by 11 percentage points. He also raised $2.3 million, a record for him.

Moore spokeswoman Julie Merz said that the real benefit to being on the Frontline 10 list was putting the race in the national spotlight.

“It kind of puts our race on a different tier and shows local donors and Kansas donors how important the race is,” she said. “It tells people locally here that, yes, Dennis won by a nice margin but we’re not taking this place for granted and neither should you.”

One of the factors that decides who goes on the list is the Democratic Performance Index, which calculates the percentage of voters who usually vote for Democratic candidates.

The index for Moore’s district, 41 percent, is one of the lowest in the nation for a district electing a Democrat, Speed said.

Besides Moore, the list includes freshman Reps. John Barrow, D-Ga., Melissa L. Bean, D-Ill., Brian Higgins, D-N.Y., Charlie Melancon, D-La., and John T. Salazar, D-Colo., plus returning Reps. Leonard Boswell, D-Iowa, Chet Edwards, D-Texas, Stephanie Herseth, D-S.D. and Jim Matheson, D-Utah.