What's happening: British Prime Minister Theresa May is facing a leadership vote triggered by members of her own party over her handling of Brexit. When does the vote take place: Wednesday evening -- May will need the backing of at least 158 Conservative Party members of parliament to survive. If she loses, what happens: May is fighting for her political life. If she doesn't win, she will be out as prime minister. If she wins she can't face another vote for a year.

Source: CNN December 12, 2018 09:09 UTC