The right-wing think tank has been pushing misinformation about voting into social media feeds. The Georgia secretary of state’s office called one video “a stunt.”In July, two men went door to door at a sprawling apartment complex in Norcross, Ga., an Atlanta suburb that is a hub for the region’s fast-growing Latino population, asking residents if they were U.S. citizens and whether they were registered to vote. Speaking in Spanish, often peeking from behind half-closed doors, seven people told the men that they were not citizens but that they were registered to vote. Although the two men claimed to represent...