In the pagan view of government, the law came from the mouth of the king and the people counted for nothing. They had neither input nor recourse against those who ruled over them.
But the Lord Jesus taught that people are called to be sons and daughters of God, and therefore they do count. He taught that authority means service, and that public officials are ministers of God and accountable to Him. This transformed politics, and government became representative and protective of human rights.
This is why we can elect our leaders, and lobby them once they are in office. This is why Christians have a political responsibility.
Some still doubt whether the pulpit is the place to talk about elections. But in fact, if there were no pulpits, neither would there be any elections.