Functions of an electoral system
Different electoral systems
Majoritarian - 50%+1 to win (either percentage of votes for a seat, or number of seats needed to form a government) - likely to produce 2 party system
Plurality - having more votes than anyone else, no outright majority required to win a seat - likely to produce 2 party system
Proportional - allocates seats roughy in line with the percentage of votes gained by a party - likely to produce multi-party system
Fixed-term Parliaments Act and elections
Passed in 2011 stating UK elections should occur every 5 years - allowed a snap election to be called if voted for by 2/3 of MPs
Effectively overturned by Conservatives Dissolution and Calling of Parliament Bill in 2022
Consider percentages/stats
FPTP - how it works
FPTP - key features
6/6
FPTP - advantages and disadvantages
Advantages
- simple/comprehensive
- clear outcome
- strong, stable government
- responsible government
- effective representation
- keeps out extremist parties
Disadvantages
- disproportionate outcomes
- electoral ‘deserts’ for some parties
- plurality rather than majority support - no need for majority
- votes of unequal value
- limited choice
- divisive politics - long periods of one party rule eg Conservatives 1979-1997
Supplementary vote - how it works
Supplementary vote - key features
3/4
Supplementary vote - advantages and disadvantages
Advantages
- winning candidate must achieve broad support - legitimate, strong and stable
- supporters of smaller parties can use their first preference to express their allegiance
- people who use both their first and second preference to support minor parties have limited influence, reducing extremism
Disadvantages
- winning candidate may be elected without winning a majority if second preference votes aren’t used effectively
- winning candidate doesn’t need a majority of first preference votes therefore not proportional
- system wouldn’t deliver proportional outcome if used for general elections
- encourages tactical voting
Single transferable vote - how it works
Single transferable vote - key features
4/4
Single transferable vote - advantages and disadvantages
Advantages
- delivers proportional outcomes, with votes of equal value
- government likely to consist of party/parties that win over 50% of vote
- voters choose between a range of candidates - greater choice
- more representative of ideologies/beliefs
Disadvantages
- less accurate in translating votes into seats
- large multi-member constituencies weaken link between MP and constituents
- likely to produce coalition - may be unstable due to disproportional influence to smaller parties
- complex/hard to understand - may discourage participation
Additional member system - how it works
Additional member system - key features
7/5
Additional member system - advantages and disadvantages
Advantages
- combines best of FPTP and PR eg balancing constituency representation with fairness of outcome
- results proportional
- votes unlikely to be wasted
- voters have a greater choice
- some parties use system to improve female/BAME representation
- system easily understood
- gov has broad popularity
Disadvantages
- two categories of representative - one with constituency links, one without - creates tensions
- parties have significant control over closed lists - voters can’t choose between candidates from the same party
- smaller parties often underrepresented
- proportional outcomes less likely when number of additional members is low eg Senedd
- confusing for voters
Impact of electoral systems on government
Impact of electoral systems on parties
Impact of electoral systems on voters
Criteria for best electoral system
Referendums - criteria by Electoral Commission
Cunningham Amendment
Turnout and result
Key referendum examples since 1997
7
Advantages of referendums
8
Disadvantages of referendums