When Is It Best to Drop an Oppo Bomb on Trump?

Nate Silver: “If the Clinton campaign does have something major on Trump — or even something minor — there’s a lot of art and science involved in when it drops the story. Too soon, and it could get swept beneath the undertow of the FBI story. Too late, and it might look desperate. But one way the campaign could end is with a whole crescendo of major stories dropping. That could make things complicated for pollsters and forecasters.”