Yeah, as a wonk it is annoying to admit to it but the general charisma of a candidate plays a far bigger role than we would like to admit. Dukakis, Dole, Gore, and Kerry all had very little Charisma. Reagan, Clinton, W Bush, and Obama all had it. For those low-information voters in the middle that could go either way, this is probably a much bigger factor than we would like to admit. :-/
Romney is good looking . . . . but he is pretty stiff. The favorable/unfavorable ratings of him are crap for him compared to Obama.
Broken record: It keeps looking like Obama wins unless there is some big event to change things (economic collapse, war, scandal, etc.).