WASHINGTON (AP) -- Vermont Sen. Bernie Sanders, an independent who caucuses with Democrats, has easily won re-election. Polls have also closed in Virginia and Indiana, where Democrats and Republicans are contesting seats currently held by a Democrat and a Republican.
In Virginia, Democrat Tim Kaine and Republican George Allen are locked in a tight contest to replace Democratic Sen. Jim Webb. In Indiana, Republican Richard Mourdock and Democrat Joe Donnelly are contesting a seat currently held by Republican Sen. Richard Lugar.
Republicans need to net four seats -- three if Mitt Romney wins the presidential race -- to take control of the Senate.