Research indicates that one important reason for the decline of third-party voting starting in the 1930s may be
a. leftward drift of the Democratic Party to adopt issues otherwise raised by third parties
b. fraud sabotaging the actual results earned by third-party candidates disenchantment with rules promulgated by the Federal Election Commission
c. restricting who can vote for third parties realization that issues raised by third parties are always insignificant
d, that the Republican Party was going to have a platform that would accomplish anything a third party would otherwise work toward