Clear Realignments, Like the One That Occurred in 1932, May

Clear realignments, like the one that occurred in 1932, may not occur again because

A) voter turnout has consistently decreased over the last forty years.
B) presidential candidates are rarely as popular with the voters as they used to be.
C) the electoral college is malapportioned.
D) voters are less attached to party labels today than in the past.
E) economic issues rarely dominate presidential campaigns.