Bush and Kerry criticize each other, polls change

The roles have been flipped in the latest AP presidential poll.
John Kerry has taken a slim lead over President Bush on the eve of their second debate.
Among 944 likely voters surveyed in the AP-Ipsos Public Affairs poll, the Kerry-Edwards ticket led Bush-Cheney 50 percent to 46 percent. The race was tied at 47 percent among all voters.
The poll shows Kerry gaining ground on all issues and fewer voters now saying Bush is the man best able to protect the nation.
Bush and Kerry criticize each other, polls change