Yes, it is absolutely necessary in the eyes of God the Father that Catholic priests, Orthodox clergy, and Protestant preachers preach against voting for pro-abortion politicians in any party because abortion is baby killing.
Voting for pro-abortion politician is voting for baby killing, and God will hold that voter responsible for the killing of the innocent babies.
Jesus Christ addressed politics of His society in preaching and constantly preached for the advancement of the Kingdom of God on earth.
It is necessary for Christian leaders to provide specific guidance to vote against pro-abortion politicians in their Sunday preaching, because this is what God wants.
God wants Christians to make disciples of nations, and this happens by changing laws to follow God’s Law.
Everyone wants peace. Parents with children want peace and secure future for their children. All parents love their children and want the best for them.
God can give peace to any family, any community, any city, any country.
But God refuses to give peace to families, cities, and countries that refuse to follow the Word of God. God refuses to give peace to families, cities, and countries that refuse to be guided by the Word of God, the Holy Bible.
The Holy Bible is very clear that homosexuality is the greatest evil in the world. Homosexuality must be illegalized by national law. Nation’s tax dollars and law enforcement agencies (police, FBI, Homeland Security, etc.) must be used to arrest homosexuals. Nation’s court system must render justice and death penalty to homosexuals.
Until this happens, God will not give the nation peace that it desperately wants and needs.