Are Democrats in trouble if Hillary's campaign collapses?

[King]

Why are people acting like lack of serious primary opposition is a rare thing? Did Obama collapse in 2012? Bush in 2004?

They were incumbents, sure, but they still were living breathing people with campaigns to run going unopposed in the primary with nobody else to take their place.  It happens all the time without incident. This campaign collapse concern trolling is garbage.

What I want to know is what are the issues (not scandals) that the GOP can beat Hillary Clinton on? There's still great avoidance by the Republicans what they actually want to do with the White House. Hell, they haven't even reached a consensus with what they want to do with Congress. For all the talk of sending Obama a message, he's only had one bill hit his desk to veto. There's more infighting than anything.