When the primary season ended, the big question for was: what will Hillary Clinton’s loyal followers do?

The Associated Press/Yahoo poll’s answer for that is a good news/bad news scenario for the Obama campaign.

On the one hand, the poll found 53 percent of Clinton supporters in April now support Obama for president – a big improvement from then, when only 40 percent of them backed Obama over John McCain.

On the other hand, almost a quarter – 23 percent – of those Clinton supporters now pick McCain over Obama. Sixteen percent are undecided, 5 percent support Ralph Nader and 3 percent said someone else.

The margin of error is +/- 2.3 percentage points. After tonight and tomorrow’s joint Clinton/Obama appearances, it will be interesting to see if loyalties shift again.