Do you think candidates and leaders will sleep tonight?

[AShaveAndAHarecutHalfPrice]

They must be utterly knackered, constantly campaigning in their own consciences, leaders on call and in parade 24/7.

I wonder if tonight they will simply zonk, or will be too wired to sleep.

Zonk

Or at least the more experienced ones will. It's tomorrow night that they'll all be wired and wide awake

Yep - their reserves must be running very low.