Only one vote majority is needed, unlike an absolute majority which would require 50% of the vote
In 2015 only 319 of 650 MPs won an absolute majority (more than 50%) of votes in their constituency
main strengths:
easy + simple to understand, voters only have to make a single cross on a ballot
decisive - usually results in one clear party winning e.g. 56% voted conservative in 2019
main weaknesses:
regularly produces five elected on a minority of the popular vote e.g. conservatives won in 2017 with 48.9%
votes are of unequal value
prevalence of safe seats means many voters have little hope of seeing their favoured candidate win
results are declared quickly e.g. on friday 13th december 2019 , considerably les than 24 hours after the polls had closed all of the UK’s constituencies had declared their results
clear accountability and effective relationships between MPs e.g. in 2019 a nimber of high profile casualties, Jo Swindon replaced by the SNP’s candidate
decisive stable govs e.g. in 2019 Johnson could legitimately claim he led a single party “people’s gov”
fundamentally undemocratic e.g. many candidates in 2019 won their seats with significantly less than 50% of the vote
distorts voting values e.g. large numbers of wasted votes, Lib Dem’s recived a seat for every 336,038 votes they secured, whereas the Tories revived a seat for every 38,264 votes