The health-care ruling has exposed a delicate dance within the Republican Party. Romney does not want to run on the health-care issue. To the extent that he wants to invoke the issue, it's to flay Obama for having focused on it as a distraction from the economy, not as an ideological crusade against Big Government. But conservative activists want to be sure that, if Romney wins, he will commit his political capital to repealing the Affordable Care Act.
33 out of 100 seats are up for election. 51 are needed for a majority.
|Seats gained or lost||+2||-2|
* Includes two independent senators expected to caucus with the Democrats: Angus King (Maine) and Sen. Bernie Sanders (Vt.).
All 435 seats are up for election. 218 are needed for a majority.