Running for office isn't cheap. Political experts say it can cost about $400,000 to $600,000 to campaign for a House seat and about $1 to $2 million for a Senate seat.
Your Money Your Vote - A CNBC Special Report
Here's a list of candidates involved in key races and their three largest contributors and industries. We'll be updating the information each month as it becomes available.. Numbers are from OpenSecrets.org and reflect contributions through October 25.
For more in formation on fundraising, check the campaign finance reports and data base page on the the Federal Election Commission site.
US Senate—Alaska
Scott McAdams (D)
Contributors
Great Land PAC $6,000
ActBlue $1,750
McKinley Capital Management $1,000
Industry
Leadership PACs $6,000
Retired $2,000
Democratic/Liberal $1,750
Joe Miller (R)
Contributors
Citizens United $5,000
SarahPAC $5,000
David L Eichler Dmd Pc $4,800
Industry
Health Professionals $14,700
Retired $12,250
Republican/Conservative $9,750
Lisa Murkowski (Write-in candidate)
Contributors
Edison Chouest Offshore $41,050
Constellation Energy $39,396
Van Ness Feldman $22,650
Industry
Electric Utilities $355,496
Oil & Gas $265,126
Leadership PACs $200,500
USSenate—Arizona
Rodney Glassman
Rodney Glassman (D)
Contributors
Intl Brotherhood of Electrical Workers $10,000
Loma Catalina Co $9,600
McMahon's $9,580
Industry
Retired $83,055
Real Estate $55,310
Lawyers/Law Firms $43,100
John McCain
John McCain (R)
Contributors
Pinnacle West Capital $36,700
NewsMax Media $29,800
Emerson $29,500
Industry
Retired $899,096
Lawyers/Law Firms $303,356
Real Estate $262,895
US Senate—Colorado
Michael Bennet
Michael Bennet (D)
Contributors
ActBlue $1,138,719
Brownstein, Hyatt et al $68,362
Blackstone Group $51,800
Industry
Democratic/Liberal $1,284,570
Lawyers/Law Firms $702,412
Securities & Investment $535,541
Ken Buck
Ken Buck (R)
Contributors
Hensel Phelps Construction $118,950
Senate Conservatives Fund $33,250
Roche Constructors $16,950
Industry
General Contractors $141,600
Retired $95,800
Leadership PACs $58,250
US Senate—Connecticut
Richard Blumenthal
Richard Blumenthal (D)
Contributors
ActBlue $141,799
Boies, Schiller & Flexner $26,650
Cablevision Systems $24,400
Industry
Lawyers/Law Firms $335,249
Securities & Investment $320,875
Retired $292,034
Linda McMahon
Linda McMahon (R)
No data available.*
US Senate—Delaware
Chris Coons
Chris Coons (D)
Contributors
ActBlue $340,099
Skadden, Arps et al $25,450
Young, Conaway et al $22,100
Industry
Democratic/Liberal $354,499
Lawyers/Law Firms $210,234
Leadership PACs $167,900
US Senate—Delaware
Christine O'Donnell
Christine O'Donnell (R)
Contributors
Republican Party of Delaware $10,158
Das Distributors $10,000
Achristavest $9,800
Industry
Retired $32,500
Republican/Conservative $16,301
Real Estate $14,400
House Of Representatives—Delaware
US Senate—Delaware
John Carney (D)
Contributors
Young, Conaway et al $41,800
Morris, Nichols et al $21,150
AstraZeneca PLC $21,050
Industry
Lawyers/Law Firms $284,865
Leadership PACs $65,500
Retired $52,921
US Senate—Delaware
Glen Urquhart (R)
Contributors
Citi $4,800
Doicese of Arlington $2,400
Gulf Stream Development $2,400
Industry
Retired $21,600
Real Estate $13,600
Health Professionals $10,800
US Senate—Florida
US Senate—Delaware
Kendrick Meeks
Kendrick Meek (D)
Contributors
Flo-Sun Inc $37,730
Greenberg Traurig LLP $34,000
CSX Corp $30,500
Industry
Lawyers/Law Firms $937,256
Retired $256,869
Leadership PACs $256,450
US Senate—Delaware
Charlie Crist
Charlie Crist (I)
Contributors
Morgan & Morgan $98,100
Rothstein, Rosenfeldt & Adler $87,650
GEO Group $80,700
Industry
Lawyers/Law Firms $1,547,731
Real Estate $904,572
Health Professionals $707,672
US Senate—Delaware
Marco Rubio
Marco Rubio (R)
Contributors
Club for Growth $321,550
Elliott Management $112,154
Senate Conservatives Fund $67,300
Industry
Retired $1,102,618
Republican/Conservative $790,545
Securities & Investment $380,993
US Senate—Illinois
US Senate—Delaware
Alexi Giannoulias (D)
Contributors
Simmons Cooper LLC $118,150
Corboy & Demetrio $98,850
Weitz & Luxenberg $40,400
Industry
Lawyers/Law Firms $1,056,714
Real Estate $480,990
Retired $200,301
US Senate—Delaware
Mark Kirk (R)
Contributors
Kirkland & Ellis $85,768
Elliott Management $76,800
Madison Dearborn Partners $62,400
Industry
Securities & Investment $936,629
Retired $757,750
Lawyers/Law Firms $521,121
US Senate—Indiana
US Senate—Delaware
Brad Ellsworth (D)
Contributors
Barnes & Thornburg $16,550
Baker & Daniels $13,500
William Blair & Co $11,450
Industry
Leadership PACs $226,400
Lawyers/Law Firms $130,877
Public Sector Unions $79,000
US Senate—Delaware
Dan Coats (R)
Contributors
Elliott Management $38,432
Barnes & Thornburg $26,550
JPMorgan Chase & Co $13,500
Industry
Leadership PACs $183,604
Securities & Investment $176,751
Retired $144,775
US Senate—Kansas
US Senate—Delaware
Lisa Johnston (D)
Contributors
No data available.
Industry
Business Services $1,500
Retired $300
Lawyers/Law Firms $250
US Senate—Delaware
Jerry Moran (R)
Contributors
CME Group $22,600
Watco Companies $20,700
Hallmark Cards $17,200
Industry
Crop Production & Basic Processing $205,829
Health Professionals $136,800
Retired $111,130
US Senate—Kentucky
US Senate—Delaware
Jack Conway (D)
Contributors
Commonwealth of Kentucky $36,368
Kindred Healthcare $31,550
Brown-Forman Corp $26,650
Industry
Lawyers/Law Firms $586,586
Retired $299,557
Securities & Investment $97,750
US Senate—Delaware
Rand Paul (R)
Contributors
Blue Cross/Blue Shield $13,000
Alamo PAC $10,000
American Bankers Assn $10,000Industry
Retired $193,178
Health Professionals $154,350
Leadership PACs $99,720
US Senate—Missouri
US Senate—Delaware
Robin Carnahan (D)
Contributors
ActBlue $489,431
EMILY's List $212,878
Bryan Cave LLP $70,377
Industry
Lawyers/Law Firms $954,273
Democratic/Liberal $575,070
Women's Issues $422,798
US Senate—Delaware
Roy Blunt (R)
Contributors
Elliott Management $81,942
Jones Financial Companies $65,500
Crawford Group $62,450
Industry
Securities & Investment $450,988
Leadership PACs $449,894
Retired $363,896
US Senate—Nevada
US Senate—Delaware
Harry Reid
Harry Reid (D)
Contributors
MGM Mirage $171,700
Weitz & Luxenberg $112,600
Simmons Cooper LLC $105,200
Industry
Lawyers/Law Firms $2,994,022
Securities & Investment $1,075,955
Real Estate $705,307
US Senate—Delaware
Sharron Angle
Sharron Angle (R)
Contributors
Club for Growth $478,762
Senate Conservatives Fund $37,950
TA Assoc $11,600
Industry
Republican/Conservative $894,983
Retired $460,708
Leadership PACs $91,700
US Senate—New Hampshire
US Senate—Delaware
Paul Hodes (D)
Contributors
ActBlue $92,993
Council for a Livable World $24,579
Intl Brotherhood of Electrical Workers $18,000
Industry
Lawyers/Law Firms $483,372
Retired $355,971
Leadership PACs $250,300
US Senate—Delaware
Kelly Ayotte (R)
Contributors
Elliott Management $81,442
Blue Cross/Blue Shield $23,250
NorPAC $22,400
Industry
Securities & Investment $297,586
Retired $219,787
Leadership PACs $163,900
US Senate-North Dakota
US Senate—Delaware
Tracy Potter (D)
Contributors
DAKPAC $10,000
Democratic Party of North Dakota $10,000
Friends of Byron Dorgan $4,000
Industry
Leadership PACs $13,500
Lawyers/Law Firms $7,350
Retired $5,750
US Senate—Delaware
John Hoeven (R)
Contributors
Murray Energy $20,789
Berkshire Hathaway $18,000
Haley's PAC $15,000
Industry
Retired $181,950
Oil & Gas $174,650
Leadership PACs $129,400
US Senate—Ohio
US Senate—Delaware
Lee Fisher (D)
Contributors
ActBlue $65,450
Forest City Enterprises $35,600
Jones Day $35,000
Industry
Lawyers/Law Firms $714,159
Retired $369,250
Real Estate $273,515
US Senate—Delaware
Rob Portman (R)
Contributors
American Financial Group $124,152
Squire, Sanders & Dempsey $89,500
General Electric $56,010
Industry
Retired $819,054
Lawyers/Law Firms $688,176
Securities & Investment $562,176
House Of Representatives—Ohio
US Senate—Delaware
Mary Jo Kilroy
Mary Jo Kilroy (D)
Contributors
EMILY's List $77,810
JStreetPAC $29,832
Ohio State University $19,700
Industry
Women's Issues $131,460
Lawyers/Law Firms $129,463
Leadership PACs $126,500
US Senate—Delaware
Steve Stivers
Steve Stivers (R)
Contributors
American Electric Power $46,700
Huntington Bancshares $25,050
Nationwide $20,300
Industry
Leadership PACs $98,410
Lawyers/Law Firms $77,920
Health Professionals $75,500
US Senator—Pennsylvania
US Senate—Delaware
Joseph Sestak
Joseph Sestak (D)
Contributors
ActBlue $1,469,915
JStreetPAC $63,310
Blank Rome LLP $36,750
Industry
Democratic/Liberal $1,567,190
Lawyers/Law Firms $406,045
Retired $273,970
US Senate—Delaware
Pat Toomey
Pat Toomey (R)
Contributors
Club for Growth $687,763
Elliott Management $109,753
SAC Capital Advisors $41,300
Industry
Republican/Conservative $1,156,636
Retired $655,450
Securities & Investment $610,404
US House Of Representatives—South Carolina
US Senate—Delaware
John M. Spratt
John M. Spratt (D)
Contributors
WilmerHale Llp $27,300
ActBlue $22,550
Duke Energy $10,750
Industry
Lawyers/Law Firms $116,950
Public Sector Unions $81,000
Electric Utilities $78,500
US Senate—Delaware
Mick Mulvaney
Mick Mulvaney (R)
Contributors
Internet Services Corp $11,400
Freedom Project $10,000
Fund for America's Future $10,000
Industry
Retired $85,271
Leadership PACs $67,418
Health Professionals $18,020
US Senate—Utah
US Senate—Delaware
Sam Granato (D)
Contributors
Intl Brotherhood of Electrical Workers $10,000
Ironworkers Union $10,000
United Steelworkers $5,250
Industry
Building Trade Unions $25,000
Industrial Unions $20,250
Retired $9,000
US Senate—Delaware
Mike Lee (R)
Contributors
Apx Alarm $43,200
Apex Alarm $18,800
Sidley Austin LLP $15,750
Industry
Business Services $73,350
Retired $51,164
Lawyers/Law Firms $33,000
US House Of Representatives—Virginia
US Senate—Delaware
Tom Perriello
Tom Perriello (D)
Contributors
University of Virginia $50,794
ActBlue $37,250
League of Conservation Voters $32,522
Industry
Leadership PACs $145,500
Retired $136,115
Democratic/Liberal $108,143
US Senate—Delaware
Robert Hurt
Robert Hurt (R)
Contributors
Ben E Keith Co $14,400
Altria Group $12,400
S&M Brands $11,600
Industry
Leadership PACs $86,750
Retired $80,150
General Contractors $29,800
US Senate-West Virginia
US Senate—Delaware
Joe Manchin (D)
Contributors
American Electric Power $19,400
Jackson Kelly Pllc $17,150
Lewis, Glasser et al $16,800
Industry
Leadership PACs $75,000
Lawyers/Law Firms $55,050
Building Trade Unions $55,000
US Senate—Delaware
John Raese (R)
Contributors
Greer Industries $64,000
Mountaineer Contractors Inc $27,300
West Virginia Radio Corp $22,002
Industry
TV/Movies/Music $92,802
Leadership PACs $91,584
General Contractors $48,650
House Of Representatives—Wisconsin
US Senate—Delaware
Julie Lassa (D)
Contributors
EMILY's List $26,500
Marshfield Clinic $13,075
American Federation of Teachers $10,000
Industry
Leadership PACs $61,400
Public Sector Unions $39,000
Women's Issues $33,305
US Senate—Delaware
Sean Duffy (R)
Contributors
Grassland Dairy $14,400
Wausau Homes $14,100
First Impressions $13,700
Industry
Retired $106,910
Leadership PACs $87,500
Health Professionals $71,186
* Editor's note: McMahon, a wealthy businesswoman, is using her own money.