WASHINGTON (AP) — Barack Obama has surged to a seven-point lead over John McCain one month before the presidential election, lifted by voters who think the Democrat is better suited to lead the nation through its sudden financial crisis, according to an Associated Press-GfK poll that underscores the mounting concerns of some McCain backers.

Likely voters now back Obama 48-41 percent over McCain, a dramatic shift from an AP-GfK survey that gave the Republican a slight edge nearly three weeks ago, before Wall Street collapsed and sent ripples across worldwide markets. On top of that, unrelated surveys show Obama beating McCain in several battlegrounds, including Ohio, Florida, Pennsylvania and Iowa — four states critical in the state-by-state fight for the presidency.

WASHINGTON (AP) — Dig beneath the surface of the raucous Republican presidential race and you will find even deeper turmoil: Four in 10 GOP voters have switched candidates in the past month alone, and nearly two-thirds say they may change their minds again.

Mike Huckabee, who has roared to a tie with longtime front-runner Rudy Giuliani, has little reason to feel safe, according to an ongoing national survey conducted for The Associated Press and Yahoo News.

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