National Democrats are concerned that Mark Critz will lose the special election to replace Jack Murtha in the 12th Congressional District in Pennsylvania. They’re already on the air for the May 18 special election, and they’re getting ready to pump over $800,000 more in advertising between now and Election Day.

Democrats gave that money. They expected it to be used to help Democrats win. But Mark Critz, in his first TV ad, is basically telling voters that Democrats aren’t to be trusted and they shouldn’t hold the seat. He contrasts an ad put up by Republicans saying that Critz would vote the “liberal agenda” in Congress by saying “That ad’s not true. I opposed the health care bill. And I’m pro-life, and pro-gun. That’s not liberal.”

I’m sure DCCC donors, particularly pro-choice and pro-gun control ones, are thrilled to know that Mark Critz plans to vote against every single one of their beliefs, and that they helped put him in office.

The truth is that Critz is favored in this special election for a variety of reasons. The main one is that the May 18 special election will be held on the same day as the Pennsylvania primaries, and there are simply more interesting primary races on the Democratic side. Second, the primary and the general election for the seat will be held on the same day, And while Critz is running unopposed in the primary, Tim Burns has competition, which will sow confusion.

But after this ad, I don’t know why one Democrat in the district or not would give a damn if Mark Critz got elected.

And also, we keep hearing about how labor is so furious at anyone and everyone who voted against the Democratic health care bill that they plan to run kamikaze missions against them. The SEIU, for example, is forming a third party in North Carolina designed to dump three Democrats who voted against health care. Just to reiterate how much I think this accountability from labor is nothing but talk, consider this: Critz, saying in his ads that he opposed health care reform, has been endorsed by the Pennsylvania AFL-CIO.