Sociologists from Baylor University's Institute for Studies of Religion, with the help of Gallup, have now conducted the most extensive national survey of religion. USA Today summarizes the results.
Update: Ed Veith's comments summarize my initial reaction to the question about your image of God: "Well, how about those who believe God is COMPLEX, that He is BOTH Authoritarian AND benevolent. How about those who believe in the Triune God, not a generic God? How about those who believe we dare not contemplate God apart from His incarnation and the mediation of Jesus Christ? Was Biblical Christianity represented on the check-off box?"
Similarly, Al Mohler writes: "Biblical Christianity cannot choose between a God of wrath and a God of love. The one true God is both loving and holy, and God's wrath is a function of his holiness. God's love for sinners who deserve nothing but His wrath culminates in the redemptive work of Christ on the cross-- where He bore the Father's wrath for sinners."