This is by Douglas Wilson from Sunday:
In the colonial era, ministers used to preach what were called artillery sermons--messages leading up to elections in order to teach and inform the saints on their duties in the civil realm. The message today is an artillery sermon to prepare you for the election, and for what comes after, regardless of what that is.
But this exhortation is a bit more focused on the process of voting itself. First, all that we do is to be offered to God at the fundamental. Ask God to count your vote, and it does not matter who else does. Give what you do to Jesus, and let Him do with it what He wills. You should be like the small boy who surrendered his fish and bread for Jesus to multiply, and not like someone who tried to feed the multitude himself by giving everyone a crumb.
Secondly, confirm it in your heart and soul that the day after the election, God is still on His throne, and Jesus is still at His right hand. Certain things are not on the ballot, as the sovereignty of God is not. When Christians react to elections with despair and panic, they are demonstrated that their faith is in the wrong place. If the election goes badly, do not soak your hair with lighter fluid, set it off, and then run in tight, little circles. Be a Christian. If the election goes well, do not act you have just been saved. Salvation is not something that Caesar holds in his hand, whether to give or withhold.
Third, vote with a clear mind and clean heart, doing so confidently and with boldness. Stand up for the unborn. Strike at every idol. Love God, and hate sin. Stand against every throne built on a foundation of lawlessness. And return here next Lord's Day for the real work of Reformation.