Her husband has already made two bids for the White House, but Jill Biden said in an interview airing Thursday she wasn’t ruling out a third attempt.

“I think Joe would be a great president. I supported him twice. In 1987, I was out there campaigning. The last election I was out there campaigning. Of course, Barack must have thought he would be a good president, too, or he wouldn’t have chosen him as vice president,” Biden told CNN’s Soledad O’Brien on “Starting Point.”

Biden was echoing remarks she made earlier in the week, when she told NBC she “wasn’t sure” if the 2012 campaign would be her husband’s last.

The vice president, who would be 73 in four years, stirred speculation in October when he left the door open to a 2016 campaign.