Today started with reports that Downing Street had “let it be known” that Theresa May would make votes on the Customs Union a matter of “confidence.” The implication seemed to be that if she lost she would call a general election. By mid-morning officials had rowed back.
Making votes in parliament a matter of “confidence” in the government used to be one of the prime minister’s biggest sticks. They could threaten backbenchers that if they didn’t fall into line they would have to go and face the electorate.
It was less of a threat to MPs with safe seats—although even they would rather see out a full-term without the hard work of electioneering with voters who might not appreciate the opportunity to vote, again. To coin a phrase, “wot, another one?” But for MPs in marginals the threat of another election could mean unemployment.
There were roughly three levels of “confidence” vote. The first, by convention, was almost mandatory—if a government lost a vote on the Queen’s Speech or its Budget it amounted to a no confidence vote and the PM had to call an Election.