With an unassuming air and a black Toyota Tundra he says was "the first new vehicle I've ever purchased," Beto O'Rourke has campaigned thousands of miles across Texas and risen to national prominence on a workaday image that aligns with his politics, but not his personal finances. The son of a onetime Republican county judge and a longtime furniture store owner, the Democratic congressman from El Paso married into the family of one of his hometown's most prominent developers and has assembled real estate investments worth millions.