Kricki has expressed the problem with Congress articulately and succinctly.
And of course, it is rather a silly waste of time to talk about how two candidates are similar in certain matters of style or attitude if they are at polar extremes regarding important issues. Unless....the voters are going to choose merely on style. And maybe they are. Why should a presidential election be any different than American Idol or Dancing With the Stars, or the newest you-be-the-judge show, Make Me a Supermodel?
Maybe we should just eliminate the primaries and have a TV show: Make Me a President.