Check out Roy Blunt's "lifetime profile" from the folks at Open Secrets. First elected in 1996, Blunt has managed to raise nearly $9 million in campaign contributions for his races, 96% of that from business interests. Topping the list of his top lifetime contributors is Edward Jones, a Missouri-based investment firm; Leggett & Platt, a Missouri-based mattress parts manufacturer; Dairy Farmers of America; the National Auto Dealers Association; and the National Association of Realtors. Overall, Blunt the the finance, insurance and real estate sector is the most generous to Blunt, giving him $1.5 million.
More in a bit on Blunt's campaign donors.