Political Affiliation 2015
The corresponding political affiliation graph shows the political affiliation of members of state and federal representatives in comparison with a political affiliation of U.S. citizens in 2015.
Notice the similarity between the party identification of U.S. citizens and the standard political bell curve which depicts the predominantly centrist viewpoint of the American people.
Contemplate the centrist ideology of the American people and the political climate that resulted in the 2015 representation.
(Reference: Pew Party Identification Poll)