An evangelical is someone who emphasizes the need for Christian conversion and whose ultimate authority for faith and practice is the Bible.
By all measures and definitions, I am an evangelical. I do believe that the Bible is the absolute authority in all areas where it speaks, and that only those who accept Jesus Christ as their Lord and Savior are saved.
Nonetheless, I am uncomfortable with the term, mostly because of the "right-wing nut job" connotations that the secular media have attached to the term. I grew up in a "left of center" household, so "conservative" was a bad word. Even though my political views have evolved into barely-right-of-center libertarianism, I'm leery of the identification. At least I do understand why "progressive" has become such a popular term. :)
I guess I'll accept the term evangelical, and just do what I can to keep it detached from the political meaning some want to attach it.