In a speech Tuesday, the party's Brexit spokesman Keir Starmer will set out a stance between two extremes.
With some polls giving May a more than 20 point lead, the main opposition Labour Party pledged to introduce new public holidays to try to unite a country divided by the Brexit vote.
What does this election mean for the actual Brexit process? There are several important implications.
Candidates' positions on French colonialism can be seen as a revealing barometer of attitudes toward immigration, race and multiculturalism today.
The former UKIP leader said current leader Paul Nuttall had "six weeks to prove himself."
Much of the West's opposition to Russia comes from a purely ideological root.
The fund also warned that a turn toward protectionism in some advanced economies could threaten global prosperity.
Fears of foreign intervention in Western politics have heightened since the U.S. presidential elections in November.
While the U.K. has a larger military, Spain enjoys a proximity advantage.
If Spain grabs the Rock, Ceuta and Melilla will demand freedom from Spanish rule.
"The sovereignty of Gibraltar is unchanged and is not going to change," said Britain's foreign minister Boris Johnson.
EU leadership is determined to present a united front as Theresa May seeks deals for Britain.
"After more than 40 years of being united, we owe it to each other to do everything we can to make this divorce as smooth as possible," Tusk said.
The British people voted for Brexit partly because leaving the EU would let them 'take back control of our laws.'
The former prime minister resigned after failing to secure a Remain vote.
The European parliament has the power to veto a Brexit deal and will play a key role in talks.
A free trade deal like Canada has with the EU would not provide the same market access British firms currently enjoy.
EU member states are not a unified club and divisions are likely to emerge.