– The Wall Street Journal has revealed a list of potential running mates being vetted by Hillary Clinton, and it doesn't include Bernie Sanders. Possible future vice presidents currently in the early stages of vetting include Sen. Elizabeth Warren of Massachusetts, Labor Secretary Tom Perez, Urban Development Secretary Julian Castro, Sen. Tim Kaine of Virginia, Sen. Sherrod Brown of Ohio, Sen. Cory Booker of New Jersey, Los Angeles Mayor Eric Garcetti, Rep. Xavier Becerra of California, and Rep. Tim Ryan of Ohio. A national poll conducted by Bloomberg found Warren leads in popularity among Clinton supporters, 35% of whom wanted to see her as vice president. She was followed by Booker, Castro, and Al Franken. (Newt Gingrich was the most popular VP choice on the GOP side.) While some Sanders supporters had been hoping for a vice presidential nomination for him, Sanders himself wouldn't be interested in the position anyway, according to a source close to him. CNN reports Sanders would rather work to change the Democratic party from the Senate than be seen as a "sell-out" or Clinton's "partner." That may explain the interest in Warren, whose policies are close to those of Sanders and who could possibly bring some of his supporters over to Clinton. Bustle calls her a "shiny apple to Sanders' orange." Sources close to Clinton say the top priority for a running mate is someone who would be ready to step in as president, and that advisers aren't really looking at what a nominee does for Clinton's campaign in terms of demographics and geography.