With a month to go until the Democratic National Convention, Hillary Clinton's campaign is weighing a slate of potential running mates, conducting interviews with candidates and in many cases requesting personal financial and medical information.
Virginia Sen. Tim Kaine, a well-liked swing state lawmaker who was a finalist on Barack Obama's vice presidential shortlist in 2008, has emerged as an early frontrunner for the job. The top tier list includes: Massachusetts Sen. Elizabeth Warren, Ohio Sen. Sherrod Brown and Housing Secretary Julian Castro, NBC News reported.
Geography and demographics are important - particularly as Democrats eye the possibility of taking control of the Senate, where they covet having a majority in place for the next administration's crucial first 100 days. On the second tier list of possible picks, there are some outside-the-box prospects as well as more widely-circulated names like New Jersey Sen. Cory Booker and Labor Secretary Tom Perez.