Prophylactic

"We have so many people that are trying to position themselves to run for president, I think it's hard to say who is the leader, and there's a lot of angst about that," said Democratic Sen. Claire McCaskill yesterday on Meet the Press, the angst stemming from the establishment's worrisome inability to control the process. You wouldn't want someone like Sen. Elizabeth Warren, say, winding up as the nominee, would you?