WASHINGTON (AP) -- Barack Obama and John McCain are knuckling down to the work of choosing running mates with their nominating conventions just weeks away.
Current and former governors and senators seem the most serious contenders. But most of those mentioned are playing coy about any discussions with either campaign.
Virginia Governor Timothy Kaine is declining to confirm reports he's provided financial documents to Obama for review. Minnesota Governor Tim Pawlenty says he's deciding to stop answering questions about a possible spot on John McCain's ticket.
Among others believed to be getting close looks: Former Massachusetts Governor Mitt Romney and former Ohio Congressman Rob Portman for McCain; Indiana Senator Evan Bayh, Delaware Senator Joe Biden and Kansas Governor Kathleen Sebelius for Obama.
Several more have been mentioned as well. But it's appearing less likely that Obama will choose former rival Hillary Rodham Clinton.
(Copyright 2008 by The Associated Press. All Rights Reserved.)