http://news.independent.co.uk/world/americas/story.jsp?story=513615It started out as a run-of-the-mill Republican primary. But Pat Toomey's challenge for incumbent Arlen Specter's Senate seat in Pennsylvania has turned into a civil war between the party's centrist and conservative wings, in which control of the Senate, and even of the White House, could be at stake.
A week before Tuesday's vote, the two contenders are criss-crossing the state, setting out their very different positions, in a contest which has dragged in President George Bush. For the moderate Mr Specter, who is seeking a fifth six-year term in the Senate, his upstart conservative rival - currently a sitting Congressman - is "not far right, he's far out". To which Mr Toomey, pro-life, anti-tax and an ardent de-regulator, replies by calling himself the candidate of "the Republican wing of the Republican party".
The race, according to a new survey, could hardly be closer. Only 10 days ago Mr Specter enjoyed a massive financial advantage and a comfortable 15 per cent lead in the polls. The margin has now shrunk to 5 per cent among likely Republican primary voters, in statistical terms a virtual dead heat.
So much importance does the White House attach to the result that Mr Bush turned out for a Specter fundraiser in Pittsburgh on Monday. But the momentum is with Mr Toomey. While Mr Specter has been forced to spend $7m (£3.9m), half his total campaign war chest, his opponent has been raking in money from ultra-conservative Republican groups.