Alistair Darling and will Alex Salmond duke it out tonight over Scottish independence for two hours in a live televised debate on the Scottish STV channel.
With Scotland's potential status as an independent nation at stake, some are billing it as the most important TV debate in British history, with Salmond widely expected to triumph due to his rhetorical panache and debating prowess
See also:
How will the softly-spoken Darling manage to win against the flamboyant Scottish premier? Here are five questions he could put to Salmond that could derail his independence argument live on Scottish television.