Groups opposing healthcare reform are urging 13 House Democrats who voted against the reform law to support the repeal bill next week.
"If you are really against ObamaCare, then you will vote yea for repeal," according to the letter from DeFundIt.org, Americans for Prosperity, Independent Women's Voice and the Association of American Physicians and Surgeons.
Five Democratic "no" votes have already told The Hill they will vote against repeal, with some dismissing the repeal effort as a political stunt. Centrist Democratic Rep. Larry Kissell (N.C.) said he is opposing repeal so Congress can focus on the economy and jobs.
Other Democrats who told The Hill they will vote against repeal include Reps. Stephen Lynch (Mass.), Collin Peterson (Minn.), Daniel Lipinski (Ill.) and Heath Shuler (N.C.).
Rep. Dan Boren (D-Okla.) told Fox News earlier this week he will likely vote for repeal, making him the only "no" vote to publicly throw his support behind the Republican bill.
Only 13 of 34 Democrats who voted against the bill remain in Congress. Others include Reps. Jim Matheson (Utah), Mike McIntyre (N.C.), Ben Chandler (Ky.), Jason Altmire (Pa.), John Barrow (Ga.), Tim Holden (Pa.) and Mike Ross (Ark.).
Shane D'Aprile contributed.