Many Americans are worried that a John McCain presidency would be just like another term of George Bush.

Two thirds of Americans are concerned that McCain would pursue policies too similar to President Bush according to a new USA Today/Gallup poll. 49 percent say they are "very concerned."

This creates a real dilemma for McCain. The conservative Republican base is less than thrilled with McCain as the GOP nominee. And that's where the few remaining people who think President Bush is doing a good job reside.

McCain can't separate himself too much from Mr. Bush or conservative Republicans will tell him to take a hike. But if he doesn't separate from Bush, he's going to have trouble attracting those voters who think President Bush is the worst thing to happen to this country in a good long while. And there are lots of those.

A new Wall Street Journal-NBC News poll focuses on President Bush's disapproval rating and the unprecedented role it could play in the campaign. None of this is good news for McCain.

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FROM CNN's Jack Cafferty:

With two weeks to go until the Iowa caucuses, the race couldn't be much tighter on the Democratic side.

A new Washington Post-ABC News poll suggests 33% of likely caucusgoers support Barack Obama, 29% back Hillary Clinton and 20% are behind John Edwards. The margin of error is 4 points.

The poll also shows Obama gaining ground on Clinton on the question of which Democrat is most electable, which had been one of Clinton's early advantages. However, when it comes to which candidate has the best experience to be president, Clinton still has a significant lead.

In Iowa, it could also come down to which campaign does a better job of motivating voters to come out in the dead of winter and spend hours attending these caucuses.

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