The Family Research Council Action Political Action Committee is protesting the National Republican Congressional Committee's decision Wednesday to cancel $400,000 of advertising it had planned over the last week of Rep. Marilyn Musgrave's re-election campaign. The FRC accuses the NRCC of "abandoning social conservative candidates" after it scaled back spending plans for Musgrave and Rep. Michele Bachmann, R-Minn.

Here's the letter from FRC Action PAC President Tony Perkins to Rep. Tom Cole of Oklahoma, chair of the NRCC:

"You have made a grave error in judgment by pulling your funds from the Michelle Bachmann race in Minnesota and the Marilyn Musgrave race in Colorado.

"The left is attacking both of these outstanding women because they are true conservatives. They vote pro-life and pro-family. Both Congresswomen are against taxpayer funding of abortion. Both oppose embryonic stem cell research, and both are for a Marriage Protection Amendment. These are issues that motivate voters. These are issues they and other conservative candidates have won and can win with.

"Reps. Bachmann and Musgrave are both in winnable districts. Pulling funds from their campaigns sends the wrong message to their supporters and gives their opponents a chance to produce headlines that the NRCC has undermined these campaigns. It appears that the NRCC is abandoning social conservative candidates and the issues for which they stand, particularly if they are championed by some of the most promising female legislators in the Congress. This is no time to cut and run from a fight.

"I will urge supporters of the FRC Action PAC to stop giving to the NRCC until it starts supporting and fighting for conservative candidates in close races.

"My supporters and I urge you to reconsider these decisions."