The latest results, based on Gallup Poll Daily tracking from April 22-24, include two days of interviews conducted entirely after Tuesday's Pennsylvania Democratic primary. Support for Clinton is significantly higher in these post-primary interviews than it was just prior to her Pennsylvania victory, clearly suggesting that Clinton's win there is the catalyst for her increased national support.

Obama's lead dwindled steadily all week, falling from a high of 10 percentage points in interviewing conducted in the three days just prior to the Pennsylvania primary. However, the percentage of Democrats supporting Obama has changed little (declining from 50% in April 19-21 polling to 48% today). Most of Clinton's increased support (from 40% to 47%) has come from previously undecided voters. [MORE]