Two big ones in Pennsylvania and Arkansas. Talking Points Memo has a nice summary of what to look for and what to expect. Lots will be made of “What does this mean for the midterms?” and “What does this mean for Obama?”. Those, in the end, are bogus questions. Both of theses sitting Senators are perceived and self-labeled as “moderates” but wishy-washy would be more accurate. If they lose, it’s more about their state’s attitude toward them, not the President.
Prediction: Ark – Lincoln will hold on; Penn – Specter will not.