PRINCETON, NJ -- The momentum in the Democratic nomination race has clearly swung toward Barack Obama. Not only has he won all of the post-Super Tuesday contests, but he has steadily gained in Gallup Poll Daily tracking to the point where he has overtaken Clinton as the national leader for the first time, holding a statistically significant lead in each of the last three tracking poll results.
Obama's standing has improved among most Democratic subgroups over the past several days. But one of the more substantial shifts has been the changing preferences of middle-aged Democratic voters, who have moved away from Clinton and toward Obama in the past week. Obama has also made gains among three other groups that have favored Clinton throughout much of the campaign -- women, Hispanics, and self-identified Democrats. Obama and Clinton are now running even among these three key groups in the most recent Gallup tracking data.
These findings are based on a comparison of Democratic voters' nomination preferences in Feb. 5-9 polling with those in Feb. 13-17 polling. Each of these five-day tracking periods consists of interviews with roughly 2,000 Democratic voters nationwide. Overall, in the Feb. 5-9 data, Clinton led Obama by an average of 49% to 42%. In the most recent five days (Feb. 13-17), the candidates' standings have basically flipped, with Obama leading Clinton by an average of 49% to 43%.
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Many credited Clinton's strong appeal to Hispanics for helping her win the important Feb. 5 California primary, and her support among this key group gives the campaign hope for a comeback victory in the March 4 Texas primary. But the tracking data suggest her support advantage among Hispanics may be eroding, at least on a national level. In the Feb. 5-9 data, Clinton led Obama by nearly 2-to-1, 63%-32%, among Hispanic Democratic voters. In the most recent polling, the two are essentially tied among this constituency, with 50% preferring Obama and 46% Clinton.
http://www.gallup.com/poll/104428/Obama-Gaining-Among-MiddleAged-Women-Hispanics.aspx