There have been many evil dictators, kings, emperors, popes, and sultans in the Bible before and since. There have been relatively few good and godly heads of state. People, when choosing a leader, will overlook immorality, infidelity, and lack of ethics but will not stand for incompetence. They would rather have a competent man who lacks integrity than the other way around. It would be nice to have both. It is rare. If this is of interest to you, make a list of leaders to make your case.
Jeremiah 17:7-8: "Blessed is the man that trusteth in the LORD, and whose hope the LORD is. For he shall be as a tree planted by the waters, and that spreadeth out her ROOTS BY THE RIVER, and shall not see when heat cometh, but her leaf shall be green; and shall not be careful in the year of drought, neither shall cease from yielding fruit."