Psychology
How Party Leadership Selection Methods Shape Party Cohesion
Quick fact
When Britain's Labour Party shifted to a 'one-member-one-vote' system for leadership elections, it empowered the activist base and contributed to internal divisions and public conflicts, whereas parties with parliamentary-only selection (like some European parties) tend to show stronger unity.
Why this is interesting
Why do some political parties appear united while others constantly squabble? The answer might not be their ideology, but the simple way they pick their leader.