Every man over 21 cannot vote. In some countries no one can.
Yes it is, as long as you have the right age to vote your vote counts in the Electoral College System by one simple vote there can be many outcomes.
No they did not
Swing Vote
The number of parties and the ability to hold a truly democratic vote (it can not be democratic if you only have one choice to vote for).
If you mean the Roman Republic, it was nominally ruled by the people, but one man did not have one vote. The Roman voting was done by blocks and one block had one vote.
ancient Rome had no house of Representatives as we know it . However the people were represented---kind of. We have a one -man-one-vote political system, but the Romans voted in blocks. The citizens were designated by their tribes or their centuries. Each tribe or century had only one vote no matter how many individuals were in its makeup.
The Mexican rounding system is a type of voting system in which voters cast one vote for their favorite candidate and there is one winner.
Depending on the voting system in use, it is possible to vote for more than one party. For the "first past the post" system a single vote per party is required. For a proportional voting system one puts a number against the candidate - 1 for the most preferred, 2 for the second preferred and so on.
China being a communistic society and not a democratic one has no voting system. There is no age limit to be able to vote because there is nothing to vote on.
Ideas have been brought forth to do away with the Electoral College and elect the President based on popular vote. It was originated because the elite of society felt that the common man was not intelligent enough to vote responsibly.
Joshua Mqabuko Nkomo has written: 'One man, one vote'