Evidence of who won the debate (Obama vs. McCain)

These results, from Sept. 25-27, span the time period since John McCain made the announcement that he was temporarily suspending his campaign and returning to Washington to work for a bipartisan solution to the financial crisis, and since Congressional leaders first announced progress towards the resolution of a financial bailout bill. The results also include one complete day (Saturday) after the first presidential debate on Friday night. McCain had reached a point where he was tied with Obama earlier in the week, but Obama has gained steadily in each of the last three days' reports. Overall, Obama has gained four percentage points over the last three days, while McCain has lost four points, for an eight-point swing in the "gap" or margin.

The full impact of the debate and its aftermath will not be reflected in the tracking data until Tuesday's report, which will be based on interviewing conducted Saturday, Sunday, and Monday. Still, Gallup's one-day read on the standing of the two candidates on Saturday suggests that Obama held the lead over McCain among registered voters that night, just as he had for the two previous nights.