MMP elections, or STV with multi-member districts, result in a broader diversity of parties being elected -- not just two opposing parties. This allows coaliti

MMP elections, or STV with multi-member districts, result in a broader diversity of parties being elected -- not just two opposing parties. This allows coalitions to form around shared interests, and results in 1) politics being more representative of what voters want, 2) more moderate politics avoiding wild policy swings, and 3) politics being more constructive. It really gives a huge quality improvement of politics moving from a binary to a plural system.