As prime minister, he will make parliament “sit day and night” until all legislation is passed, forcing it to sit all through summer for seven days a week if necessary.

Legally, I don’t even think the prime minster can do that (force them to “sit day and night” and “all through summer”). But then again, look at the US to what is currently legal verus what has happened. Even if he does become PM, as long as the party isn’t the majority, they can’t force parliament to sit as long as they want.