Incorrect, it required 2/3 of members to vote in favour. Labour had 40% of seats at that time. Without Labour votes it was impossible to bring forward the election. And Sinn Fein had 7 seats and they never take the seats and vote. So, again, without Labour it was impossible to have the 2019 election
Comments
https://en.m.wikipedia.org/wiki/Early_Parliamentary_General_Election_Act_2019