Live, Election2014: Will the GOP take the #Senate?

Balance of Power, Senate:& House, some predict a historic defeat for Democrats Tuesday night, with control of both the House of Representatives and the Senate at stake.

The Republicans, who already control the House, are aiming to win the Senate by focusing on a few key battleground states. Races in Alaska, Arkansas, Colorado, Georgia, Iowa, Kansas, Kentucky, Louisiana, New Hampshire and North Carolina will shape President Barack Obama's final two years in office.

Read more: the Senate outcome will affect any Obama appointments