Editor's note: See John King's full report on shifting polls in key battleground states on AC360° tonight at 10p ET.
CNN Chief National Correspondent
John McCain has a problem with Baby Boomers – and if he doesn't fix it, it's hard to map out a Republican Electoral College victory.
First a national look: two weeks ago, a Pew Research Center poll showed McCain leading Obama 48 percent to 43 percent among voters in the 50 to 64 age group.
But in a new survey released Wednesday, Obama leads among those voters 51 percent to 39 percent.
One poll does not warrant panic.
But some new CNN battleground state polling shows a similar trend – as voters who are closing in on retirement, and who therefore arguably have the most immediately at stake in the financial crisis, trend toward the Democratic candidate.
Take Missouri, for example. In a CNN/Opinion Research Corp. poll three weeks ago, McCain had a narrow statewide lead - 50 percent to 45 percent.
A new survey released Wednesday, though, shows a statistical dead head: 49 percnet for Obama and 48 percent for McCain.
Again, a slide among Baby Boomers is a major factor in McCain's decline. In the early September Missouri poll, McCain led 53 percent to 44 percent among voters 50 and older. In the new Missouri poll, the two candidates are tied at 48 percent in this age group.
It is much the same in battleground Florida: Two weeks ago, the state was a tie; now Obama has a narrow lead, 51 percent to 47 percent.
And among those 50 and older?
Two weeks ago: it was McCain 48 percent, Obama 47 percent.
In the new poll, taken Sept 28-30: It was Obama 51 percent and McCain 46 percent.
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