From Elton Trueblood's collection of Daily Readings from the Prayers of Samuel Johnson, one titled "Engaging in Politics."
ALMIGHTY GOD, who art the Giver of all Wisdom enlighten my understanding with knowledge of right, and govern my will by Thy laws, that no deceit may mislead me, nor temptation corrupt me, that I may always endeavour to do good, and to hinder evil. Amidst all the hopes and fears of this world, take not Thy Holy Spirit from me, but grant that my thoughts may be fixed on Thee, and that I may finally attain everlasting happiness, for Jesus Christ's sake. Amen.
Samuel Johnson, November, 1765.