Tea party influence leaves bitter taste for Republicans
Pulled to right by ultra-conservative wing and dragged down by failure to reach out to key groups of voters, Republicans face hard choice

To gauge the depth of the questions facing the Republican Party after its defeat on Tuesday, just consider one fact.
It was the fifth time in the past six elections that the Republicans had lost the popular vote.
While some looking for scapegoats will point to recent events, particularly the intervention of superstorm Sandy in killing the momentum of Mitt Romney, or even the claim from some in the party he was not a "genuine conservative", far larger issues loom.
It is an old US political saying that neither major party has won when it moves to extremes. And so it was again. The political calculus starts from a simple point - you find the political centre and you try to hold it.
Yet the modern Republican Party, pulled out of the centre by the tea-party movement and fuelled by an increasingly partisan section of the media, is now further to the right than many of its previous presidents.
For all his darker side, Richard Nixon created the Environmental Protection Agency, expanded national parks and pursued an equality agenda. Gerald Ford was pro-abortion. Ronald Reagan was proudly colour-blind.