MPs who have been in their roles for decades find themselves ousted. MPs have introduced an amendment that allows MPs to set the order of business in Parliament on 4 September , in an attempt to prevent a no - deal Brexit . The amendment , which passed by 328 votes to 301 , lets MPs debate a bill preventing the UK from leaving the EU unless a deal is reached , or MPs explicitly refuse to leave without one . Prime Minister Boris Johnson said he would seek to trigger a general election if MPs vote to force another Brexit deal . Johnson also lost his slim working majority of one when MP Phillip Lee defected to the Liberal Democrats .
MPs have introduced an amendment that allows MPs to set the order of business in Parliament on 4 September , in an attempt to prevent a no - deal Brexit . The amendment , which passed by 328 votes to 301 , lets MPs debate a bill preventing the UK from leaving the EU unless a deal is reached , or MPs explicitly refuse to leave without one . Prime Minister Boris Johnson said he would seek to trigger a general election if MPs vote to force another Brexit deal . Johnson also lost his slim working majority of one when MP Phillip Lee defected to the Liberal Democrats .