Control of Senate main prize in US election
Optimistic Republicans looked to win control of the Senate, while Democrats struggled to limit their congressional losses Tuesday in a US election that could change the balance of power midway through President Barack Obama's second term.
Democrats weighed down by Obama's low approval ratings kept their distance from him and looked to a costly get-out-the-vote operation in the most competitive Senate races to save their seats and their majority. They were working furiously to reach out to minority, women and young voters who tend to sit-out elections when the presidency is not at stake
