most people in DC are intelligent. Their IQ is probably over 100. There are a few extremists (usually very far left or right) who might dip under 100. They're the ones that fall ass backward into an office and usually lose in primary, or last one term in office. But even the Christine ODonnells and Sharon Angle's of the world - they're still bright people.
People mix up "intelligence" with political ideology. Warren buffet is a brilliant man - he would take mental photographs of stock charts and calculate things in his head that others couldn't do on paper - made his billions and most would consider him to be brilliant - however, he's dumb when it comes to supporting conservative beliefs. He's a liberal.
on the other hand... Joe the Plumber had great political beliefs, but he wasn't the brightest dude around. He's smarter ideologically than Warren buffet, by a mile. But would anyone really say "Plumber is smarter than Buffet"? lol, never.
it's like that here too. Hilary has a higher IQ than Palin, and anyone that argues that point is probably a standard deviation below 100 to begin with lol... The disagreement really only comes from us confusing intelligence with political beliefs.