four, frank lawsuiten 45 millio seven, bob caulker, 21 million. nine, claire mccaskill, democrat, 17 million. >> reporter: lamar alexander, tennessee, 10 million v. the 10 richest senators in congress, seven are democrats, three republicans. >> question, by the way, roll call newspaper says that roughly 40%, 40% of the u.s. congress are millionaires. the wealth of members of congress is divided fairly evenly between the parties, democrats in the senate hold 80% of the wealth and republicans in the household 78% of the wealth. what about all this money? >> first of all, running for office is a big roll of the day, and so people who do it generally have a nice little financial cushion that they can fall back on if it doesn't work out. so i think the people who run for congress as a whole tend to be more well healed. but the washington post has done some terrific reporting lately on the way that members of the house in particular, both parties, and the senate, too, i think, have used their insider knowledge of the economic picture, particularly durin