We'll start a new section called definitions where we'll provide definitions for various terms that might be thrown around. If you think that doing so, treats you like an idiot, I'm sorry.
A single issue voter is a voter who upon looking at the ballot is only going to vote for candidates based on their response to a single isue and if it matches up with how the voter feels/thinks about the issue.
For example, many people are single issue voters when it comes to abortion. Most of these single issue voters are pro-life. They will go through the ballot and only vote for the individuals who are pro-life. They will go even further and vote for the candidates who are decidedly the most pro-life.
Let's apply this to something that happened recently. Barack Obama came out and said that he is in favor of gay marriage. Well, technically, he said that personally he is in favor of gay marriage but he believes that states should allow votes on whether or not that they accept gay marriage, much like they do now. If you are a single-issue voter on gay marriage you might be inclined to vote for a president who personally supports gay marriage but would you really vote for one who is in favor of how we are handling the issue currently? Unless, you're a forward-thinking single issue voter and you know that there is a possibility of retirements on the Supreme Court in the next couple of years and you're aware that the issue of gay marriage is likely to end up in the Supreme Court in the next few years. Unless the judges elect not to rule on it. A federal appeals court in California ruled that the ban on gay marriage was unconstitutional and a court in Massachusetts ruled that DOMA was unconstitutional. Knowing all this, maybe, as a single-issue voter on gay marriage you would choose to vote for President Obama.
Single issue voting is one way of making sure that others around you are voting. I've been telling people for the last few years that if there is an issue that makes you feel strongly enough to talk about it without it being brought up constantly, you should probably bemaking sure your voice is heard and you should vote for the candidate who best represents your belief on that singular issue. Even though, I might not agree with your stance on a particular issue, I would like you to be represented properly.