(CNN) - What does President Obama say was his best decision in the past 24 months? Picking Joe Biden as his vice president.
"The single best decision that I have made was selecting Joe Biden as my running mate," Obama said. "The single best decision I have made. I mean that. It's true."
Obama was in Delaware with Biden campaigning for Democratic Senate nominee Chris Coons, but in his speech seemed to address the rumors that circulated after Bob Woodward said making Secretary of State Hillary Clinton Obama's vice president in 2012 was "on the table."
Obama and Biden also voiced their support for Coons and stressed the importance of the November elections.
"I never say anything I don't mean and sometimes I say things I mean I shouldn't say," Biden said. "Delaware is coming back, the United States of America is coming back."
Obama acknowledged that this is a tough election season for Democrats, but said this election is a choice between "fears and hopes," echoing the rhetoric of the 2008 election.
"I don't want to relive the past," Obama said. "I want to reach for a better future."