Political system where nearly every adult may vote but where knowledge, wealth, social position, access to officials

"In a political system where nearly every adult may vote but where knowledge, wealth, social position, access to officials, and other resources are unequally distributed, who actually governs?" In one paragraph, explain HOW Larry Bartels answers this question in The New Gilded Age reading, In another paragraph, explain ONE PIECE OF EVIDENCE Bartels provides for his conclusion