Different kinds of voters

 First of all, most people don't give any vote. There are many reasons behind it; some can't make time for it, some are not sure to whom they should vote, some think what's the point no matter who gets selected will only make themselves rich or will be corrupted, etc.

Some people votes. Now here we have different kinds of voters too. 

Some give votes who give them bribes. Because they think all are the same for them, they give votes only to those who bribe them to get something from the ballot.

Another kind of people votes for them, who could benefit them only. No matter how bad they might be for the nation or others. They only think about their own benefits.

A group of people doesn't know who should get the vote, but they do know who shouldn't. So, to stop that unfavorite person, they vote for the opposite party person, who can stop that unfavorite person.

Another group monitors the statistics by looking at who might win the elections. Then they decide who to vote for and who has no future, not to vote for those candidates; no matter how much they like them, they don't vote for them.

Some people blindly love a political party. Whoever comes from that party or believes, they will vote for them. Will never try to check whether they will be suitable for all.

Finally, some people check agendas, policies, and candidates' pasts to determine how good they are and who to vote for.

All candidates and media keep trying to convince only this last section of people. The question is how big are these people to change election results?