The impact of public approval or disapproval of the president on the support that the president receives in Congress is
A) irrelevant.
B) not too important, though it occasionally has a minor effect.
C) represented in the text by the equation s \'3D px\'2D1.
D) extremely important, and sways nearly all members of Congress on every vote.
E) important, but usually at the margins on most policies.
Answer: E