NEWCASTLE, Okla. (AP) — Sherrie Conley is like most people in small-town Oklahoma: solidly conservative. When she goes to the polls, she faithfully votes Republican.

But in Tuesday's primary election here, the elementary school principal won't be voting for the two-term GOP state House member from her district. That's because she's trying to get him out of office.

Conley is part of a wave of about 100 educators, including dozens of Republicans, who are running for office in the aftermath of a teacher walkout that shut down public schools for two weeks this spring and opened an unusually bitter...