The Primary Colors algorithm was created primarily to identify low-value Democrats in safe districts for primary challenges — but it can show us other things as well.
When we assign each member of Congress an expected score, it’s based on their colleagues’ scores in districts with similar partisan profiles.
Obviously we’d expect Democratic politicians to vote more conservative the more conservative their district gets, and more liberal the more liberal their district gets. And by-and-large, they do.
But Republicans don’t really follow that trend, as you can see in red on the graph below:
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