If an election comes down to one vote, that vote is solving something very important.
Elections are won and lost by the ground game. Turning out vote is essential. If enough people stay home, it will make a statement regarding the opinions of the populace. In the last election, if enough Catholics had stayed home, it would have made a strong statement about abortion. Today, you have a President that wants to defund Planned Parenthood. The only reason he does, is because he knows it is important to a large voting block that supported him…Christians.
That is why you vote.