I published some work recently (along with the ACA-Effects Posse of Nyhan, Sides, McGhee, and Greene) suggesting that voting for health reform was very costly for House Democrats in 2010, causing them to run 5-6 points worse in the November elections and quite possibly costing them control of the chamber. Well, there's a flipside to this, it turns out. The New York Times reports that two conservative House Democrats -- Reps. Jason Altmire and Tim Holden of Pennsylvania -- lost their primaries earlier this week largely because of their opposition to health reform. So they might well have lost their seats to Republicans in November 2010 had they supported the bill. Instead, they lost their seats to other Democrats because they voted against it. Sucks to be them.
Alert readers, please be on the lookout for other Democrats who opposed ACA and are now facing primary challenges as a result.