The disgraced former MP whose admission he watched porn in the House of Commons triggered a disastrous by-election defeat for Boris Johnson has told the prime minister to "face reality".
Neil Parish said the result showed a "crisis of confidence” in the Conservative leader in the wake of the partygate scandal.
In a stunning victory, the Liberal Democrats overturned a 24,000 Conservative majority to take the Devon seat of Tiverton and Honiton.