Barack Obama: 150. Magna cum laude, Harvard Law School. Author of well written memoir.
Half Sigma: 145. Smart enough to qualify for the Triple Nine Society. Not smart enough to graduate magna cum laude from Harvard Law School, but smart enough to graduate top 10% from Arizona State University College of Law.
120 125. This is the toughest one to guess. I don't believe the 133 he allegedly scored on an IQ test. He did graduate bottom of the class from the Naval Academy, but I think he underperformed. The estimate is based on his IQ when he was younger. IQ declines with age, and McCain is quite old.
Michelle Obama: 120. Helped by affirmative action, but she still got admitted to Harvard Law School.
Joe Biden: 115. Barely smart enough to pass bar exam and graduate bottom of the class from a third tier law school.
Sarah Palin: 103. I recently said 100, but I discovered she got good grades at the crappy Hawaii Pacific University where the average student scores 965 on the SAT, so I bump her up to 103.
Todd Palin: 97. College dropout. But promoted to high-paying foreman position at blue collar oil field job. But then, subtract points for having a pregnant unmarried high school dropout daughter.
Todd Palin: 105. Todd Palin is an oilfield production operator, which is a skilled blue collar job, kind of like an auto mechanic, except he has to maintain oilfield equipment instead of cars. As a high-end skilled blue collar worker, his IQ would be higher than the average blue collar worker. But he did drop out of college, and he has no educational aspirations for his children, so he's probably no more than just slightly above average.
Because more women than men attend college at this IQ level, it's common to see men without college degrees married to women with college degrees, but the men have better paying skilled blue collar jobs.