Quinnipiac in Ohio: Clinton 49, Obama 45

The trendline shows a shrinking Clinton lead. Apparently, Obama has gained among men and black men (really?). The gender gap is huge -- men support Obama by 21 points -- 55 to 39; while women support Clinton, 55 to 39.

The classic Clinton demographic coalition -- working class whites and older Democrats -- is giving her the edge here. Obama's getting fully 90% of the black vote, more of the votes of those younger than 45, and the votes of the wealthy. White men remaining a swing demo: Clinton and Obama tie at 47 to 46; Clinton wins among white women, 68 to 26.