But PR promptly gives seats to a new party supported by a large minority. This reasonable threat forced the old liberal parties to decide that political experience was not as important as gender balance. They dropped some experienced men to make room for women on their lists of nominees. And they won. They are now incumbents with experience, power, and allies.
Most voters ignore primaries.
But later, many feel the 2 finalists offer little choice. A liberal rep must compete against similar reps and challengers for the favor of liberal voters. This lets voters have real choices. This page has reached the length limit for machine translation. Further down are pages on the Single Transferable Vote, probably the best PR rule for city councils and for organizations with no political parties.