To Run a Successful Campaign,which of the Following Is a Responsibility

To run a successful campaign,which of the following is a responsibility of the campaign staff? 

A)  To cast ballots in the electoral college 
B)  To supervise the voting process in each precinct 
C)  To persuade the voters to go to the polls 
D)  To make certain that only qualified voters cast ballots 
E)  To see that voting machines are available at the polling place