<sod >A no deal Brexit could lead to a general election in 2019 with a âreal chanceâ that Jeremy  could be prime minister then, the leader of the UK's largest trade union said.< eod>< sod > A no-deal Brexit could lead to a general election in 2020, with a âreal chanceâ that Jeremy Corbyn could be voted in as prime minister, the leader of the UKâs largest trade union said.< eod>