The majority of people who choose to not register to vote do so because of three simple reasons. The first reason is because they don't have the "time" to take out of their day to go and vote. The second reason would be that they don't believe that their vote will count. People tend to think that millions and millions of people are voting all over the world and that one single person can't make a difference, yet in reality, it can. The final reason would be because of the requirements needed to register. There is a decent amount of time and effort involved in registering to vote, and they just don't care to; plus they think on the upside there is no chance of being called in for jury duty.