Britain's Prime Minister Boris Johnson reacts as he meets with NHS workers inside 10 Downing Street in London, Britain September 3, 2019. Daniel Leal-Olivas/Pool via REUTERS

LONDON (Reuters) - Prime Minister Boris Johnson is clear that should lawmakers decide to vote against his government on Tuesday, then the British public should decide who negotiates with the European Union in an election, his spokesman said.

Lawmakers are expected to vote later on a plan to seize parliamentary time on Wednesday to try and pass a law which would force Johnson to seek a delay to Brexit.

“The PM has been very clear ... should MPs (Members of Parliament) vote tonight to trash the UK’s negotiating position, to hand the power over to the opposition, that the next logical step for this prime minister, is something he doesn’t want ... an election,” the spokesman said.

“Then the British public can decide who goes to Brussels to make that decision,” he said, repeating that if Conservatives voted against the government or abstained they would be expelled from the party’s group in parliament.