Hillary Clinton Former US Secretary of State, and probably the strongest Democrat candidate, Clinton says she won’t announce whether she’s going to run for office before the end of the year. ElizabethWarren Despite saying she won’t run, the first woman ever to be elected to the US Senate from Massachusetts has a strong and loyal following. She’s also the only woman to get remotely close to Clinton’s popularity. Amy Klobuchar Often mentioned as a 2016 presidential hopeful, US Senator for Minnesota Klobuchar recently put her name behind fundraising group, Ready for Hillary. She may not be running, but she’s one to watch for the future.