Democrats retain Senate control, House hangs in balance

The Democratic Party has retained control of the US Senate, winning two close contests in Arizona and Nevada to go up 50-49, with one seat (Georgia) going into a run-off election in December because no candidate could hit the 50 per cent vote required under state laws.With the vice-president having a tie-breaker vote, Democrats have once again edged out Republicans who were tipped by pollsters to win both the Senate and the 435-member House.