Pro-Trump group gathers intel for its war on voting machines

In June, a man and a woman turned up unannounced at the office of Catherine Roeske, the city clerk in Oak Creek, Wisconsin. They wanted to ask Roeske detailed questions about how local elections were run.

“We’re pretty much these grassroots people,” the man said, according to an audio recording of the encounter. “We’re nonpartisan,” the woman added. All they wanted, she said, was to educate citizens about the electoral process.

Roeske dutifully answered their questions. Only later did she learn from a Reuters reporter that the couple were part of...