Administrative election procedure may not safeguard the rights and the convenience of voters, nor keep election expenses to a minimum, nor prevent fraud. The system of registration of voters, the assignment of party colours and symbols, ballot regulations, or regulations concerning the casting and counting of votes, may be at fault. The timing of the election, the hours which the booths are open and the location of polling stations may be unfairly organized. The organization of electoral campaigns and the choice of candidates may be unfair, and corruption may play a part in this; intimidation and undue influence over voters may go unchecked. Legislative seats may be unfairly distributed.