Of the 435 seats in the House of Representatives, only about 17 will face the potential for party change in the upcoming midterm elections. Some blame either gerrymandering or voter self-selection into red and blue districts for this lack of competitiveness for House seats. However, Bill Frey says the explanation is that most Americans are actually moderates — neither red nor blue. And moderates are less likely to vote than the dedicated partisans who create the neat red and blue voting blocs.