What's happening in Massachusetts?

Massachusetts is often regarded as THE centre of American liberalism - and yet pollsters are suggesting that the State may fall to the Republicans in today's special election. This isn't just an embarrassment - it would mean that the Democrats in the Senate lose the ability to stop filibusters (60 Senators are needed - because of obstructionist practices by the minority - that, rather than a simple majority has become the number needed to move any business.)

There is a Republican tradition in Massachussets, it has had mainly GOP Governors in recent years - but it would be a shocking loss for the Democrats.

First indications should come when polls close at 8pm (EST - 1am UK/2am European time). A useful guide to the evening, and what to look for can be accessed here. It has written by staff from 'Politico'.