Update: Nothing official yet, but we’d be surprised if the by-election isn’t on the same day as the county council elections in May.
“David Miliband is to stun Parliament by stepping down as an MP tomorrow to take up a “dream job” in New York.
The former Foreign Secretary – and brother of Labour leader Ed – intends to make the shock announcement tomorrow morning.
The Mirror understands he intends to step down with immediate effect, triggering a by-election in May.
He is thought to have confided in just a handful of close allies about his decision.”
We’ll bring you more on this as we have it.