AP-GfK Poll Shows White House Race Still Tight

For all the attention it got, Republican Mitt Romney's selection of Rep. Paul Ryan of Wisconsin as his running mate has not altered the race against President Barack Obama.

A new Associated Press-GfK poll shows that the campaign remains a dead heat with less than three months to go.

Overall, 47 percent of registered voters say they plan to back Obama and Vice President Joe Biden in November, while 46 percent favor Romney and Ryan. That's a statistical dead heat, not much changed from an AP-GfK survey in June.

At the same time, there's a far wider gap when people are asked who they think will win. Some 58 percent of adults say they expect Obama to be re-elected, while just 32 percent say they think he'll lose.