First past the post (FPTP) is a simple plurality system where the candidate with the most votes will be elected and does not have to win by a certain majority.
FPTP is used in UKgeneralelections where voters cast one vote for their preferred candidate, and the candidate with the largest number of votes in a constituency (seat) will be elected to Parliament as an MP. There are 650 constituencies in the UK. The party with the most seats can form a government.
Advantages
AMS gives voters more choice because they can use one vote for an MP they support and another to support a party of their choosing.
Voters can vote for a ‘split ticket’ where they support an MP from one party and use their party list vote to support a different party.
how many constituencies does the UK have? 650
Proportional systems, such as in Scotland, Northern Ireland and Wales, have encouraged more negotiations between political parties.
If a minority government forms, as it has several times in Scotland and Wales, then the government needs the support of other parties to pass legislation and its policies.
AMS has led to an SNP minority government from 2007-2011.