Yes. True and effective exorcisms are performed in the different Christian confessions. On the one hand, the Eastern Orthodox churches maintain apostolic succession, in which their bishops and priests are validly ordained and, as such, possess a true sacramental power. On the other hand, the various Protestant churches, though they do not possess a valid ministerial priesthood, profess faith in Christ and in the power of His name. With just such weapons, the devil can be expelled. God, in His wisdom, has not desired to place too many conditions on the most essential Christian practices for them to be valid. For example, baptism, by which one enters into the Christian faith, is normally considered valid in all Christian traditions (provided that the Trinitarian formula given by Jesus is followed: “I baptize you in the name of the Father, and of the Son, and of the Holy Spirit”). Likewise, Jesus knew the great suffering demonic possession would cause to those afflicted by it, and He did not want to establish strict conditions to be followed to make exorcisms effective.