Chafee has opposed the administration's push to drill in the Arctic National Wildlife Refuge and has criticized Bush's handling of the postwar reconstruction of Iraq. He was the only Republican senator to vote against the October 2002 resolution that gave Bush the authority to invade Iraq.

The Republican said the party's direction in the future will determine his political career as well. He said he's "not OK" with the conservative platform from the Republican convention, but would not say if he'd consider switching parties in his next election in 2006.

"It wasn't that long ago that moderates had more of a voice," Chafee said. "It's a cycle that I hope will come back."