As with previous polls, the numbers suggest resentment from the primary battle may carry over into the fall campaign against Republican John McCain -- even more so if Obama is the nominee. Some 22 percent of Democrats called it either "not very likely" or "not at all likely" that they'd vote for Obama in the fall, while the comparable number for Clinton is 17 percent. Despite that, a narrow margin -- 45-to-43 percent -- believed that Obama has a better chance of winning the overall general election. The poll's margin of error is plus or minus 4 percent.