Fraser Nelson at Coffee House says the arrest of Damian Green could be a disaster for Gordon Brown.
On his blog, John Redwood says that some of the most active leakers are ministers themselves.
Iain Dale says the Speaker should have stopped the police from raiding Green's office in the House of Commons.
Steve Richards in the Independent wonders whether the economic crisis could result in a hung parliament and a coalition government.
Mary Riddell in the Daily Telegraph interviews David Miliband, who says leadership speculation in the summer "went in a direction I wasn't expecting".
Robbie Dinwoodie in the Herald on why 20% of MSPs employ their relatives in the Scottish parliament.
