The significance of factors over-time are variable to change but have predominantly remained the same.

To grade these factors, we personally gave a score 1-10 for each one and averaged them as a class.
Leadership: Generally, leadership remained quite high up until the 2024 election. This can be attributed considerably to partisan dealignment.
- 1983: Foot vs. Thatcher
- 1997: Blair vs. Brown
- 2019: Corbyn vs. Johnson - some voters were not willing to vote for Labour due to Corbyn and saw Johnson as a good alternative Campaign: Recent Events:
- 2010: Financial crash
- 2019: Brexit - ‘get Brexit done’
- 2024: Lack of Conservative economic action
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TODO.