Getting people riled up about abortion allowed them to get a large segment of voters to support their party. Anti-choice people are largely emotional, single-issue voters. Once you’ve convinced people that your opponents want to allow “baby killing”, you can pretty much count on their votes without having to actually cater to their needs.

Important to note that many people don’t believe that the way things are is “stable”. It isn’t just “change it to be better than just stable,” it’s "get most people to be stable instead of just the rich people who are stable already "