Mark Williamson from zip code 53711
Political contributions disclosed by campaign committees to the Federal Election Commission, sorted by name, zip code and employer. The data, from the FEC, covers the years 1979 through 2008.
Candidates
| Mark Williamson, American Transmission | |
| $250 to Charles Grassley, Grassley Committee Inc on August 8, 2002 | |
| Mark Williamson, American Transmission Company | |
| $3,250 to Russell Feingold, Feingold Senate Committee from February 7, 2004 to February 6, 2005 | |
| Mark Williamson, Madison Gas & Electric | |
| $250 to Russell Feingold, Feingold Senate Committee on July 20, 1998 | |
| Mark Williamson, Madison Gas & Electric Co. | |
| $200 to Paul Ryan, Ryan For Congress on May 15, 2001 | |
| Mark Williamson, Vice Pres, American Transmission Co. | |
| $1,000 to Paul Ryan, Ryan For Congress from November 4, 2002 to June 23, 2003 | |
| Mark Williamson, Vice, American Transmission Company | |
| $2,750 to Russell Feingold, Feingold Senate Committee from January 9, 2006 to January 21, 2008 | |
| $1,250 to Tammy Baldwin, Tammy Baldwin For Congress from November 4, 2003 to July 30, 2004 | |
| $750 to David Ross Obey, A Lot Of People For Dave Obey on November 4, 2002 | |
| Mark Williamson, Attorney, Mg&E | |
| $750 to Tammy Baldwin, Tammy Baldwin For Congress from August 14, 2002 to January 29, 2003 | |
Committees
| Mark Williamson, American Transmission | |
| $250 to Grassley Committee Inc on August 8, 2002 | |
| Mark Williamson, American Transmission Company | |
| $3,250 to Feingold Senate Committee from February 7, 2004 to February 6, 2005 | |
| Mark Williamson, Madison Gas & Electric | |
| $250 to Feingold Senate Committee on July 20, 1998 | |
| Mark Williamson, Madison Gas & Electric Co. | |
| $200 to Ryan For Congress on May 15, 2001 | |
| Mark Williamson, Mg&E | |
| $200 to Soglin For Congress on October 29, 1996 | |
| Mark Williamson, Vice Pres, American Transmission Co. | |
| $1,000 to Ryan For Congress from November 4, 2002 to June 23, 2003 | |
| Mark Williamson, Vice, American Transmission Company | |
| $2,750 to Feingold Senate Committee from January 9, 2006 to January 21, 2008 | |
| $500 to Progressive Patriots Fund on September 30, 2005 | |
| $1,250 to Tammy Baldwin For Congress from November 4, 2003 to July 30, 2004 | |
| $750 to A Lot Of People For Dave Obey on November 4, 2002 | |
| Mark Williamson, Attorney, Mg&E | |
| $750 to Tammy Baldwin For Congress from August 14, 2002 to January 29, 2003 | |
