All they get is a slap on the wrist: a honourable Minister, given that the subject is the leader of the opposition, might have felt obliged to resign - but we are talking Tories here.
A Downing Street spokesman said:
These tweets have rightly been deleted. The MPs involved have been spoken to by the whips’ office and reminded of their responsibility to check the validity of information before they post on social media sites.
From The Guardian live blog