Right now, I would say it's currently a toss up between Kelly Clarkson and Carrie Underwood as to who is the most popular American Idol winner. Over time, though, I believe that it will more than likely end up that Carrie Underwood becomes the most popular American Idol winner. While Carrie may have only recently released her second album (Carnival Ride), her debut album (Some Hearts) has sold at a faster rate than Kelly Clarkson's first album did. Also, I think Carrie is more likely to have crossover appeal (not only can Carrie appeal to the country audience, she can also appeal to pop and adult contemporary audiences as well). Kelly, while she may have the pop and adult contemporary appeal, is much less likely to find any real success on the country charts. And it also doesn't help that Kelly's third album, My December, didn't sell as well as her previous efforts. So far, it looks like Jordin Sparks won't be much of a contender for the title of the "most ...
American Idol Winners