Sen. Tim Kaine, D-Va., on Capitol Hill earlier this month. In an interview with NPR's Michel Martin, Kaine encouraged Congress to reassert its authority as a coequal branch of government. Susan Walsh/AP hide caption
Sen. Tim Kaine
Democratic vice presidential nominee, Virginia Sen. Tim Kaine, held a town hall at the Exeter Town Hall in Exeter, N.H., on Thursday afternoon. John Tully for NPR hide caption
Debbie Wasserman Schultz is stepping down as chair of the Democratic National Committee amid a furor over an email leak that revealed a bias against Bernie Sanders inside the DNC. Bloomberg via Getty Images hide caption
Democratic presidential candidate Hillary Clinton and Sen. Tim Kaine of Virginia greet the crowd during a campaign event on July 14 in Annandale, Va. Alex Wong/Getty Images hide caption
Sen. Tim Kaine. Patrick McDermott/Getty Images hide caption