A Quinnipiac University poll released yesterday gives more ammunition to Hillary Clinton's argument that she's the more electable Democrat in November.

The poll of three "key swing states" shows Clinton beating McCain in Florida, Ohio, and Pennsylvania, but McCain beating Obama in the first two of those three and only down by 6% in Pennsylvania.

From the Quinnipiac news release [1]:

"The numbers for Florida and Ohio are good news for Sen. John McCain and should be worrisome for Sen. Barack Obama. That is especially true about Ohio, which decided the 2004 election. Ohio's economy is worse than the rest of the country and the Republican brand there is in disrepute. McCain's Buckeye lead may be a sign that nationally this may not be the easy Democratic walk to the White House that many expected," said Peter A. Brown, assistant director of the Quinnipiac University Polling Institute.

"In the Democratic primaries Sen. Obama won in most states among whites with college educations. But this data show him losing among Florida and Ohio white college graduates by six points or more," Brown added.

If you're enough of a political junkie to read poll internals, the details in the poll results [2]are quite interesting. I was trying to sell out my John McCain futures [3] at 39% but I canceled my offer. (Actually, I canceled it yesterday before learning of this poll as I believe that McCain is still probably less than 50/50 to win, but should probably be trading more like mid-40s rather than high 30s.)