Bush was favored by only 35 percent, according to the poll of 2,395 people conducted by the magazine Parade.com.
The poll also found Brad Pitt and Jennifer Aniston are American's favorite Hollywood couple and their split was voted the most shocking moment in recent pop-culture history by 34 percent of the respondents.
If the four "American Idol" winners competed against each other, 55 percent thought Kelly Clarkson would win, 18 percent thought Carrie Underwood would, 14 percent favored Fantasia and 13 percent thought Ruben Studdard would win.
Most of the respondents don't think expectant mom Britney Spears will be a good parent.
When asked which celebrities would raise the most well-adjusted children, Spears and Kevin Federline were tied for dead last with Jennifer Lopez and Marc Anthony -- both with 1 percent of the vote. Will Smith and Jada Pinkett-Smith were considered the celebrity couple most likely to have well-adjusted children at 61 percent.