The House of Commons backed the prime minister by a margin of 522 votes to 13, above the two-thirds majority needed, as Labour and the Lib Dems supported the move.
May, who took over as prime minister without an election in the political turmoil that followed Britain's vote to leave the European Union last June, made the surprise announcement on Tuesday that she wanted to hold a snap election.
"I believe that at this moment of enormous national significance there should be unity here in Westminster, not division", Ms May told Parliament.
Addressing a rowdy parliament, she said moving the election would avoid a clash of priorities in the most sensitive final stages of the two-year talks, ignoring criticism from opposition politicians that she was opportunistic and untrustworthy.
"This election is about her government's failure to rebuild the economy and living standards for the majority", he said.
DREAMers should 'rest easy,' Trump says
The term "dreamers" refers to a group of undocumented immigrants who crossed the border at a young age and grew up in America.
With the Labor Party's popularity at a historic low, analysts widely expect Theresa May's Conservatives and their allies to retain a majority in parliament, meaning May would remain prime minister during course of the Brexit negotiations.
Brexit will dominate the campaign, with May - who took office after David Cameron resigned following the European Union vote - seeking public backing for her plan to pull Britain out of Europe's single market.
May's Conservatives now hold 330 of the 650 seats in the House of Commons.
We need an election now to secure the strong, stable leadership the country needs to see us through Brexit & beyond.
Following a meeting of the Labour National Executive, attended by Scottish party leader Kezia Dugdale, Mr Corbyn said the Nationalists had wrecked their progressive credentials by refusing to implement a 50p tax rate.
Ferrari, Mercedes about equal says Wolff
Hamilton has praised Bottas constantly since he arrived, even calling him a "gentleman" for agreeing to let him past in Bahrain . Him running third, what could've been or what his pace would have been we don't know.
"She expects a coronation and not a contest", Farron said, urging voters to back his strongly pro-EU party to stop a Conservative landslide. The hotly contested "Brexit" referendum ended with the resignation of then-Prime Minister David Cameron.
The prime minister's own personal ratings also dwarf those of Corbyn, with 50 per cent of those asked saying she would make the best prime minister. The British people have to navigate a way through not just choosing a government but working out what they want the governing mandate to be.
Another possible reason Hedley mentioned was the "absolute disarray" and disunity in which the Labour Party now finds itself - implying the rejection of Jeremy Corbyn by the Parliamentary wing of a Labour party "stuffed mainly by careerists and opportunists" - which he compared to the Clinton wing of the Democratic Party in the US. "Of course, there are going to be several difficulties for the Conservatives in the election campaign including the impact on Scotland and the potential for a second referendum, and a focus in the campaign on what sort of post-EU Britain the Conservatives want".
"The SNP wants to break up the United Kingdom; it has no interest in making it work better".
Ex-Spurs striker Crooks: Heung-min Son most improved in Premier League
Our destiny's in our own hands. "Hopefully, Manchester United can get a result tomorrow and do us a favour". It means a lot. "There are two aspects to the current situation and what we do".
- Donald Trump says Iran isn't meeting 'spirit' of 2015 nuclear deal
- 'Where's My Trophy?' - Ronnie O'Sullivan Is Not Happy With Snooker Authorities
- Fresno killing spree was racially motivated
- Indian minister, party leaders to be tried in mosque demolition case
- China, America Need to Do More to Stop North Korea -- Gordon Chang
- Trump's UN Envoy: Ouster of Assad A Priority of US
- Queen Elizabeth II turns 91
- Trump stumbles in Syrian attack
- Valenzuela protests call for President to step down, 8 killed so far
- Global (VR) headsets market forecast 2017-2021 illuminated by new report