Citizen Smith?

I would bet you anything you liked that Owen Smith was a republican, which is at once a very New Labour and a very Welsh Labour thing to be.

Moreover, he would place far more emphasis on it than would, and does, a Leader who is busy with more pressing concerns.

Of course, the desire to abolish the monarchy is found across the political spectrum.

There are, to my certain knowledge, privately outspoken republicans among those MPs who supported Andrea Leadsom for Leader of their party.