Andrew Kohut writes in the Washington Post that polarization is not a one-way street. While Republicans have become more conservative, Democrats have grown more liberal.
A minority of Republicans believe that their party is doing a good job in standing up for its traditional positions of smaller government, tax-cutting and conservative social values.
Significantly fewer Republicans believe in evolution than did so four years ago, setting them apart from Democrats and independents. But behind this finding is a puzzle: If the views of the overall public have remained steady, and there has been little change among people of other political affiliations, how do you account for the Republican numbers? An explainer.