Republicans have hurt themselves in the battle for the House. Here’s how.

The budget standoff that led to a government shutdown exacted a heavy toll on the Republican Party’s image. Now comes fresh evidence to suggest it has complicated the GOP’s effort to retain its House majority.

Data in the new Washington Post-ABC News poll should worry House Republican campaign strategists for several reasons, even as the election is still more than a year away and the GOP still has the upper hand overall. Below are the three biggest causes for concern. CONT.

Sean Sullivan, Washington Post