From NBC's First Read:
Days after becoming his party's presumptive nominee and receiving Clinton's endorsement, Obama has opened up a six-point advantage over McCain (47%-41%) in the latest NBC/WSJ poll, which is up three points from Obama's lead in April. Perhaps the most fascinating numbers are in the crosstabs, and some of the numbers will surprise folks who memorized every exit poll from the Democratic primaries. Obama leads McCain among African Americans (83-7), Hispanics (62-28), women (52-33), Catholics (47-40), independents (41-36) and even blue-collar workers (47-42). Obama is also ahead among those who said they voted for Clinton in the Democratic primaries (61-19). Meanwhile, McCain is up among evangelicals (69-21), white men (55-35), men (49-41), whites (47-41), and white suburban women (44-38). However, Obama has a seven-point edge (46-39) among all white women. How important is that lead? NBC/WSJ co-pollster Neil Newhouse (R) explains that Republican candidates always expect to win white men by a substantial margin, but it's white women that usually decide the race. "If a Republican wins among white women, we usually win that election," he says, noting that George Bush carried that group in 2000 and 2004. The poll was conducted of 1,000 registered voters from June 6-9 (Clinton endorsed Obama on June 7), and it has a +/- 3.1% margin of error.