Cincinnati—Presumptive Democratic nominee Hillary Clinton hugs Elizabeth Warren after they spoke together at a rally on June 27. These days, the two most high-profile women in politics look a lot like teammates. Not only has the Massachusetts senator proved effective at attacking Clinton’s presumed opponent, Donald Trump, but some say Warren, a darling of the left, could help sway holdouts for Vermont Senator Bernie Sanders. Despite her past criticism of Clinton, Warren seems to want the job. But some question whether the country is ready for a two-woman ticket—and whether Clinton is willing to take that risk.