YES is the simple answer. It is because it is important to have healthy competition in politics otherwise if it was a one party state or country, things could be quite different. if you do not vote then you do not matter to them.

1) "For me, voting Is what makes our country the great nation it is. My vote matters. If you don't think it does, just look back to the 2000 presidential election." Source and further information: http://findarticles.com/p/articles/mi_m0IBP/is_10_46/ai_93318028 2) "Is voting a right? A responsibility? A duty? A chore? If it’s a right, then it’s one that we may not necessarily take for granted, but it’s a responsibility we may not always take seriously. Indeed, voting may just honestly not seem cool anymore, even after decades of MTV’s “Rock the Vote” and “Boxers vs. Briefs” propaganda. Many potential voters, or past voters who’ve given it up, are now asking, What has voting gotten us? What does it matter?" "See if any of these categories fit you: • You, like some of our writers, may feel more disenfranchised than you have in years, not just because you don’t like the folks in power, but also because you don’t like your district or your candidates or the looks you get when you show up at your polling place. Maybe you don’t think your vote counts because you don’t think they’re counting your vote. • On the other hand, maybe things are finally going your way—politically or economically or both—and after a long spell there, some common-sense ideas have come back up in politics, giving you something to cheer about and swelling you with pride. For you, maybe it’s a little easier to get to the polls except, well, everyone else is going to vote the way you do, anyway, right? Does it really matter if you vote? • Then there’s the other category, along the lines of: They’re all a bunch of thieves, anyway, and nothing ever comes of anything political. What’s the point? Hold a sign? Punch a chad? What’s the difference? It is the way it is, and it’ll always be that way, so save your energy for Sony Playstation or sewing or playing music or—of course—shopping! Who is right? At the Jackson Free Press, we lean toward the idea that you ought to exercise any muscles that you don’t want to give up on completely, even if your sport of choice is snowskiing, and it seems like it’s perpetually August. Others, as you’ll see, have their own take on our great American tradition of democracy—including their opinions on whether the glory of that tradition is fading, already gone, or just cresting the horizon of a glorious comeback." Source and further information: http://www.jacksonfreepress.com/index.php/site/comments/does_your_vote_matter/ 3) " Can my vote really change the course of politics, or am I just a grain of sand on the massive beach of democracy?" "Yes: Letting Your Voice Be Heard Independent and First-Time Voters are Proving Pivotal in This Election A New Electoral Map Has Brought Youth Voters Into the Spotlight One Vote Can Make the Difference - Will It Be Yours? No: It Depends on What You Mean by "Matter" Electoral College: Your Vote Matters Less in Presidential Elections Your Vote "Matters" as a Signal of Your Policy Preferences Face the Facts. Increasingly Your Vote Doesn't Matter Every Vote Gets Counted, But Often it Doesn't Really Count There are Reasons for Low Voter Turnout...Apathy is the Least of Them Voting out of Obligation is Worse Than Not Voting at All." Source and further information: http://www.opposingviews.com/questions/does-my-vote-matter