Well as i see it, it would be an anti EU party that would eventually propse a vote to exit the eu treaty...

That being said... as the treaty was never properly ratified there is no treaty to repeal... so its a bit hard to know....

TBH once the treaty has gone through i very much doubt it would be repealed anywhere barring major circumstances... so imo the anti eu camp are right to try anything and everything to stop a vote and then make sure its rejected... once its passed it aint coming down...