Cameron in Command?

The latest Guardian/ICM poll looks especially bad for Labour:

Voters would overwhelmingly prefer David Cameron as prime minister, even if Labour replaced Gordon Brown with David Miliband, a new Guardian/ICM poll shows.

The prime minister returns to No 10 tomorrow after his summer break to find Labour stuck a long way behind the Tories. The only silver lining for Brown is that Miliband, his foreign secretary and possible leadership rival, would not do any better as a credible challenger to the Conservatives.

When people were asked to choose the best prime minister between Cameron and Brown, or Cameron and Miliband, the Tory leader beat both men by the same 21% margin.