A National Park Service employee posts a sign on a barricade closing access to the Lincoln Memorial. (Carolyn Kaster/AP) A National Park Service employee posts a sign on a barricade closing access to the Lincoln Memorial. (Carolyn Kaster/AP)

Three Democratic members of Congress are asking a group of their Republican colleagues to support efforts to force a vote on a “clean” government funding bill.

The Democrats — Reps. Chris Van Hollen (Md.), George Miller (Calif.) and Nita Lowey (N.Y.) — sent letters to 30 House Republicans who are identified by the Democrats as willing to vote for a temporary budget measure that does not call for the defunding or a delay in the Affordable Care Act.

The Senate has passed a bill doing that, but Speaker John Boehner (R-Ohio) has refused to allow a vote on it in the House, saying the measure would not pass. Independent tallies however, including one by The Washington Post, indicate that there are enough votes for approval.

The Democrats want the Republicans to join in signing a discharge petition Saturday.  A petition signed by a majority of members could force a vote on the bill.

The letter was sent to: Rep. Lou Barletta (R-Pa.)Rep. Shelley Moore Capito (R-W.Va.)Rep. Mike Coffman (R-Co.)Rep. Tom Cole (R-Okla.)Rep. Rodney Davis (R-Ill.)Rep. Charles W. Dent (R-Pa.)Rep. Mario Diaz-Balart (R-Fla.)Rep. Michael G. Fitzpatrick (R-Pa.)Rep. Randy Forbes (R-Va.)Rep. Jim Gerlach (R-Pa.)Rep. Tim Griffin (R-Ark.)Rep. Michael G. Grimm (R-N.Y.)Rep. Richard L. Hanna (R-N.Y.)Rep. Walter Jones (R-N.C.)Rep. Peter T. King (R-N.Y.)Rep. Leonard Lance (R-N.J.)Rep. Frank A. LoBiondo (R-N.J.)Rep. Patrick Meehan (R-Pa.)Rep. Devin Nunes (R-Calif.)Rep. Erik Paulsen (R-Minn.)Rep. David G. Reichert (R-Wash.)Rep. E. Scott Rigell (R-Va.)Rep. Dennis A. Ross (R-Fla.)Rep. Jon Runyan (R-N.J.)Rep. Michael K. Simpson (R-Idaho)Rep. Robert J. Wittman (R-Va.)Rep. Frank R. Wolf (R-Va.)Rep. Steve Womack (R-Ark.)Rep. C.W. Bill Young (R-Fla.) and Rep. Don Young (R-Alaska).

federaldiary@washpost.com

Twitter: @JoeDavidsonWP