British Prime Minister Theresa May is facing the first defections of Conservative members of Parliament as early as Wednesday, with three Tories poised to walk away from her party, according to a person familiar with the matter.

The person, who has knowledge of the new “Independent Group” of MPs, didn’t name the three Tories who are on the brink of quitting, but said there would be a formal announcement just after the weekly Prime Minister’s Questions slot at midday.

If the MPs want maximum publicity and drama, they are likely to make their move during that session, which is carried live on television and radio.