Labour MPs braced for defeat - and another battle with Corbyn
Labour MPs are bracing themselves for a disastrous general election result and a resulting battle to try to oust Jeremy Corbyn.
The announcement by Mr Johnson and Middlesbrough South MP MP Tom Blenkinsop brings to four the number of Labour MPs who have quit in recent months.
Many Labour MPs also say that Mr Corbyn is hurting them on the doorsteps.
That charge is rejected by Corbyn supporters who accuse Labour MPs of creating disunity within the party that is hurting its opinion poll ratings.
Meanwhile, there were reports that Mr Corbyn planned to force Labour MPs to enter a ballot in order to contest their seat.