Excellent choice.
May knows her deal would fail a vote in the commons (the remainers hate it because it's still leaving the EU, most leavers hate it because it isn't the Brexit they want) which would likely spell the end of her premiership (her own backbenchers have been heavily criticising it, and several cabinet members have resigned in protest) and cause either a no deal Brexit or a second referendum which would go remain (both of which stand a good chance of splitting the Tory party), so she is trying to remove the chance for that failure to occur.
Corbyn and the leaders of other smaller and/or regional parties (Greens, Liberal Democrats, Scottish National Party, Plaid Cymru) are attempting to hold May in contempt again for pulling the vote (for those keeping track, this is would be the second time in history it will have happened, with the first being last week). They have still yet to call a vote of no confidence. It's worth mentioning here that Corbyn doesn't want a second vote on the final deal (despite 80% of his party membership voting in favour of it) and seems to think he'd be allowed two years to negotiate a 'better' Brexit deal, despite the EU saying that isn't on the table.
In other words, the chances that Brexit actually happens is probably the lowest it's been since the referendum.
If he loses his seat Doug Jones needs to be AG.
