Source: Authors' Calculation of Data from Keith Poole,"The Polarization of Congressional

Source: Authors' calculation of data from Keith Poole,"The Polarization of Congressional
Parties," Voteview,January 30,2016.
-What best represents the trend of party polarization over the last three decades?

A) The parties have become less polarized because more and more voters are opting to become independents.
B) Both Republicans and Democrats have become more liberal.-Consider This: Republicans have become more conservative and Democrats more liberal.
C) While members of Congress have not become more extreme,ordinary citizens have.
D) Each congressional party has become more homogeneous,and the distance between parties has increased.