Experiences with electoral reform: effects on campaigning and party diversity

[Jerry_T]

I've been researching different voting systems after feeling increasingly dissatisfied with the outcomes in my country's first-past-the-post elections, where winning candidates often receive less than half the local vote. I'm curious about the practical impacts of switching to a proportional representation or ranked-choice voting system. For those in countries that have implemented such reforms, what were the most noticeable changes in political campaigning, voter engagement, and the diversity of parties represented in the legislature?