President Barack Obama joins Former President Bill Clinton on stage during the Democratic National Convention in Charlotte, N.C., on Wednesday. J. Scott Applewhite/AP hide caption

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President Obama spoke at a campaign event at Strawbery Banke Museum in Portsmouth, N.H., on Friday. Pablo Martinez Monsivais/AP hide caption

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Former Michigan Gov. Jennifer Granholm making one of her points Thursday at the Democratic National Convention. Chip Somodevilla/Getty Images hide caption

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What does your vision of America look like? Loud Red Creative/iStockphoto.com hide caption

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Vice President Biden and President Obama wave to the delegates Thursday night at the conclusion of the Democratic National Convention in Charlotte, N.C. Robyn Beck /AFP/Getty Images hide caption

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President Obama and other members of his national security team monitored the mission that ended with the death of Osama bin Laden in May 2011. Pete Souza/White House hide caption

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President Obama speaks during a campaign event at a high school in Toledo, Ohio. Pablo Martinez Monsivais/AP hide caption

itoggle caption Pablo Martinez Monsivais/AP

Los Angeles Mayor and Democratic Convention Chairman Antonio Villaraigosa calls for a vote to amend the platform Wednesday at the Democratic National Convention in Charlotte, N.C. Charles Dharapak/AP hide caption

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Former President Bill Clinton at the Democratic National Convention in Charlotte, N.C., Wednesday night. Mladen Antonov /AFP/Getty Images hide caption

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It may be in former President Bill Clinton's (and his wife's) interest to help keep the Democratic party together for the next convention. Carolyn Kaster/AP hide caption

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