The latest Iowa poll conducted by Research 2000 for KCCI-TV (the CBS affiliate in Des Moines) shows Clinton leading with 28 percent, Edwards within the margin of error at 26 percent, Obama with 22 percent, and Richardson with 7 percent.

It's a big change from the last Research 2000/KCCI poll, which was in December and showed Edwards and Obama tied at 22 percent, with Tom Vilsack in third place with 12 percent.

Click the link if you want to read the details.

If this poll is accurate, there has been a massive surge in support for Hillary Clinton over the past six months. I don't get that sense, but what are you hearing?

It looks like Richardson's early tv ads have raised his profile in Iowa quite a bit. He only had 1 percent support in the December poll.

In this poll, Obama does slightly better in head-to-head matchups with the Republican front-runners than Edwards, while Edwards does slightly better than Clinton.

I wonder what the likely voter screen is on this poll. In talking to Iowa Democrats who actually participated in the 2004 caucuses (as opposed to people who didn't but claim that they plan to participate in the upcoming caucuses), I have trouble finding Clinton supporters. I really do. I was just talking to a Clinton leaner yesterday, but even she said, without prompting from me, that Clinton has a lot of baggage, and she's just not sure if she could win.

I found the Bush approval numbers from this poll interesting. Approve/disapprove numbers for all respondents are 30/68.

The numbers for Democrats are 8/90.

The numbers for independents are 29/70.

Even among Republicans sampled, Bush's approval was only measured at 56 percent; disapproval was 42 percent. Those are shockingly poor numbers.