Here is Elizabeth Dias’s reporting at The New York Times:
After church on a recent Sunday, Emily Mooney smiled as she told her girlfriends about her public act of rebellion. She had slapped a “Beto for Senate’’ sticker on her S.U.V. and driven it to her family’s evangelical church.
But then, across the parking lot, deep in conservative, Bible-belt Texas, she spotted a sign of support: the same exact sticker endorsing Beto O’Rourke, the Democrat who is challenging Senator Ted Cruz.
“I was like, who is it?” she exclaimed. “Who in this church is doing this?”
Listening to Ms. Mooney’s story, the four other evangelical moms standing around a kitchen island began to buzz with excitement. All of them go to similarly conservative churches in Dallas. All are longtime Republican voters, solely because they oppose abortion rights. Only one broke ranks to vote for Hillary Clinton in 2016. But this November, they have all decided to vote for Mr. O’Rourke, the Democratic upstart who is on the front line of trying to upend politics in deep-red Texas.