Fifty percent of likely voters call the economy the single most important issue in their vote, far outstripping all others (health care and Iraq follow at 10 percent each).
Obama seized the advantage on the economy shortly after McCain's Sept. 15th comment that "the fundamentals of our economy are strong," and hasn't let go since.
Obama leads McCain in trust to handle the economy, now by 54-40 percent. And among voters who call the economy their top issue Obama's edge is even larger.
These economy voters are partially responsible for Obama's competitiveness in some groups that usually favor Republicans. As noted, he leads McCain, by 53-45 percent, among whites who cite the economy as their top issue. Whites more focused on other issues favor McCain by a wide 59-38 percent.
Drilling down, Obama trails by just 7 points among white men and 6 points among white women -- groups that Kerry lost by 25 points and 11 points, respectively, in 2004.
Again, that relies in large part on Obama's relatively strong showing among white men (Obama +5) and white women (Obama +11) who name the economy as their top voting issue.
Similarly, Obama has an unusual 4-point edge among mainline or non-evangelical white Protestants, a group George W. Bush won by 11 points in 2004.
The reason is the same: Among mainline white Protestants who cite the economy as their top issue, Obama leads McCain by a wide 59-38 percent. Those who pick other issues favor McCain, 55-41 percent.
Results are similar among white Catholics, married women, married men, seniors, working-class and middle-class whites: In each of these groups, Obama does far better among those who say the economy's the issue driving their vote.
Indeed, even among evangelical white Protestants, one of McCain's single best groups, those focused on the economy are twice as apt to support Obama, 29 percent vs. 14 percent. And Obama wins 16 percent support from Republicans who cite the economy as their top issue, compared with 7 percent from those who don't.
McCain's also had no traction on taxes, "Joe the Plumber" or no; Obama's held a steady lead, now 9 points, in trust to handle them -- the first Democrat to lead on taxes since Bill Clinton's victory in the economy-driven election of 1992.
And Obama's withstood McCain's questions about his readiness; the two remain about even in trust to handle a crisis, 49-46 percent, Obama-McCain.
Other measures across the three weeks of this ABC/Post tracking poll have indicated Obama's ability to clear the "experience" hurdle; 55 percent say he's experienced enough to serve effectively as president and 56 percent call him a "safe" rather than "risky" choice for president – more than the 51 percent who say so of McCain.