A political action committee that helps Republicans get elected to Congress is doing the unusual — spending more than $450,000 to defeat a GOP incumbent. That incumbent, conservative two-term Rep. Bob Good, R-Va., voted to remove former Rep. Kevin McCarthy as House speaker last fall. It’s just the latest example of how money is flowing into races involving some of the eight Republican lawmakers who voted along with Democrats to oust McCarthy. About $3.3 million has been spent on ads in the...