The leaders are debating the issue of North Sea Oil.
Alex Salmond says that "every other country in Europe would give their back teeth to have North Sea Oil".
Alistair Darling argues that it is risky to rely on a source of revenue that is very volatile, saying that Salmond is "gambling our children's future".
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How do you solve a £4.4 billion hole like tax credits? At 12.30pm on Wednesday, we'll find out.
The Government may be about to announce a new levy on council tax of up to 2% to replenish social care budgets.
The Chancellor will present his Autumn Statement and Spending Review to the House of Commons on Wednesday.