The Federal Election Commission web site has a fairly easy way to look up donations to the congressional and Senate candidates. That includes donations from Political Action Committees (PACs), the so-called special interests that range from Big Oil to banks and insurance companies and cattle producers.
They’ve given hundreds of thousands of dollars to Oklahoma candidates, primarily incumbents.
Information about the Republican candidates for the House can be found here. The basic numbers show that Reps. Frank Lucas, R-Cheyenne, and John Sullivan, R-Tulsa, have actually raised more money from PACs than from individual contributors.
The Democratic numbers show Rep. Dan Boren (he’s listed as David D Boren) has raised substantially more from PACs than from individuals.
The individual and PAC donors can be viewed by clicking on the appropriate link.