2014 United States Senate election in Colorado

The 2014 United States Senate election in Colorado was held on November 4, 2014, to elect a member of the United States Senate to represent the State of Colorado, concurrently with the election of the Governor of Colorado, other elections to the United States Senate, elections to the United States House of Representatives, and various state and local elections. Incumbent Democratic Senator Mark Udall ran for re-election to a second term, but narrowly lost to Republican U.S. Representative Cory Gardner by a margin of 1.9 percent.

Despite Gardner's win however, with slightly over 48% of the vote, it is the lowest a winning Republican had received in the Class 2 Senate seat since 1918. As of , this is the last time that a Republican has won a U.S. Senate race in Colorado.

Democratic primary Mark Udall was the only Democrat to file to run, and thus at the Democratic state assembly on April 12, 2014, he was renominated unopposed.

Candidates Nominee Mark Udall, incumbent U.S. Senator

Results

Republican primary At the Republican state assembly on April 12, 2014, Cory Gardner received 73% of the votes of over 3,900 delegates. Neither Randy Baumgardner nor Tom Janich received the required 30% to make the ballot and thus Gardner received the party's nomination.

Candidates Nominee Cory Gardner, U.S. Representative

Rejected in convention Randy Baumgardner, state senator Tom Janich, perennial candidate

Withdrew Mark Aspiri, businessman Ken Buck, Weld County District Attorney and nominee for the U.S. Senate in 2010 (ran for CO-04) Owen Hill, state senatorSchrader, Megan. Republican Owen Hill plans to make bid for Mark Udall's U.S. Senate seat June 8, 2013. Retrieved June 9, 2013. Jaime McMillan, businessman Amy Stephens, state representative Floyd Trujillo, businessman

Declined Bob Beauprez, former U.S. Representative and nominee for Governor in 2006 (running for Governor) Mike Coffman, U.S. Representative Dan Domenico, Solicitor General of Colorado Doug Lamborn, U.S. Representative Jane Norton, former lieutenant governor of Colorado and candidate for the U.S. Senate in 2010 Scott Renfroe, state senator Victor E. Renuart Jr., former commander of United States Northern Command and the North American Aerospace Defense Command Ellen Roberts, state senator John Suthers, Attorney General of Colorado Scott Tipton, U.S. Representative

Endorsements

Polling Poll source MarkAspiri RandyBaumgardner CoryGardner OwenHill TomJanich FloydTrujillo Other UndecidedPublic Policy PollingPublic Policy Polling March 13–16, 2014 255 ± 6.1% 3% 15% 44% 6% 4% 0% — 29%

Poll source MarkAspiri RandyBaumgardner KenBuck OwenHill JaimeMcMillan AmyStephens Other UndecidedPublic Policy PollingPublic Policy Polling December 3–4, 2013 335 ± 5.2% 0% 8% 45% 2% 1% 7% — 37%

Results

Libertarian Party Candidates Nominated Gaylon Kent, candidate for Colorado's 3rd congressional district in 2012

Unity Party of America Candidates Nominated Bill Hammons, founder and National Chairman of the Unity Party of America

Independents Candidates Declared Raúl Acosta, IT professional Steve Shogan, neurosurgeon

General election Fundraising Candidate Raised Spent Cash on Hand Mark Udall (D) $14,088,510 $15,746,249 $536,332 Cory Gardner (R) $9,680,263 $9,100,730 $1,875,029

Debates Complete video of debate, October 6, 2014 Complete video of debate, October 15, 2014

Predictions Source Ranking As of The Cook Political Report November 3, 2014 Sabato's Crystal Ball November 3, 2014 Rothenberg Political Report November 3, 2014 Real Clear Politics November 3, 2014

Polling Poll source Date(s)administered Samplesize Margin oferror MarkUdall (D) CoryGardner (R) Other UndecidedPublic Policy PollingPublic Policy Polling November 1–2, 2014 739 ± 3.6% 45% 48% 5%Raúl Acosta (I) 1%, Bill Hammons (UP) 0%, Gaylon Kent (L) 2%, Steve Shogan (I) 0% 3% 47% 50% — 3%Quinnipiac UniversityQuinnipiac University October 28 – November 2, 2014 815 ± 3.4% 43% 45% 7%Steve Shogan (I) 6%, Other 1% 4% 45% 46% 2% 6%YouGovYouGov October 25–31, 2014 1,417 ± 3.3% 42% 43% 5% 11%Public Policy PollingPublic Policy Polling October 28–29, 2014 573 ± ? 48% 48% — 4%SurveyUSASurveyUSA October 27–29, 2014 618 ± 4% 44% 46% 5%Gaylon Kent (L) 2%, Steve Shogan (I) 3% 5%Vox Populi PollingVox Populi Polling October 26–27, 2014 642 ± 3.9% 43% 46% — 10%Quinnipiac UniversityQuinnipiac University October 22–27, 2014 844 ± 3.4% 39% 46% 8%Steve Shogan (I) 7%, Other 1% 7% 41% 49% 2% 9%Strategies 360Strategies 360 October 20–25, 2014 604 ± 4% 45% 44% 4% 8%Rasmussen ReportsRasmussen Reports October 21–23, 2014 966 ± 3% 45% 51% 2% 2%Harstad Strategic ResearchHarstad Strategic Research October 19–23, 2014 1,004 ± ? 44% 43% 6% 6%CBS News/NYT/YouGovCBS News/NYT/YouGov October 16–23, 2014 1,611 ± 4% 47% 46% 1% 6%NBC News/MaristNBC News/Marist October 18–22, 2014 755 LV ± 3.6% 45% 46% 3% 5% 953 RV ± 3.2% 45% 44% 3% 8%Suffolk UniversitySuffolk University October 18–21, 2014 500 ± 4.4% 39% 46% 6%Raúl Acosta (I) 1%, Bill Hammons (UP) 1%, Gaylon Kent (L) 3%, Steve Shogan (I) 2% 9%Quinnipiac UniversityQuinnipiac University October 15–21, 2014 974 ± 3.1% 41% 46% 6%Steve Shogan (I) 6% 44% 48% 2% 7%Monmouth UniversityMonmouth University October 17–20, 2014 431 ± 4.7% 46% 47% 4% 3%IPSOSIPSOS October 13–20, 2014 1,099 ± 3.4% 45% 47% — 8%Public Policy PollingPublic Policy Polling October 16–19, 2014 778 ± 3.5% 43% 46% 5%Raúl Acosta (I) 1%, Bill Hammons (UP) 1%, Gaylon Kent (L) 2%, Steve Shogan (I) 1% 7% 44% 47% — 9%Gravis MarketingGravis Marketing October 16, 2014 695 ± 4% 43% 48% 4% 5%Benenson Strategy GroupBenenson Strategy Group October 15–16, 2014 600 ± ? 47% 44% 1% 8%Mellman GroupMellman Group October 13–15, 2014 800 ± 3.5% 44% 41% — 15%CNN/ORCCNN/ORC October 9–13, 2014 665 ± 4% 46% 50% — 4%Quinnipiac UniversityQuinnipiac University October 8–13, 2014 988 ± 3.1% 41% 47% 8% 4% 44% 49% 1% 7%SurveyUSASurveyUSA October 9–12, 2014 591 ± 4.1% 43% 45% 6%Gaylon Kent (L) 3%, Steve Shogan (I) 2% 7%High Point UniversityHigh Point University October 4–8, 2014 800 ± 3.5% 42% 46% 7% 5%Fox NewsFox News October 4–7, 2014 739 ± 3.5% 37% 43% 7% 12%Greenberg Quinlan Rosner September 25 – October 1, 2014 1,000 ± 2.09% 45% 45% 10%CBS News/NYT/YouGov September 20 – October 1, 2014 1,634 ± 3% 48% 45% 1% 6%Rasmussen Reports September 29–30, 2014 950 ± 3% 47% 48% 2% 3%Public Policy PollingPublic Policy Polling September 19–21, 2014 652 ± 3.8% 45% 47% — 8%ccAdvertisingccAdvertising September 19–21, 2014 2,094 ± ? 32% 38% — 30%Gravis MarketingGravis Marketing September 16–17, 2014 657 ± 4% 39% 46% 6% 9%Suffolk UniversitySuffolk University September 9–16, 2014 500 ± 4.4% 42% 43% 6% 10%QuinnipiacQuinnipiac September 10–15, 2014 1,211 ± 2.8% 40% 48% 8% 3% 42% 52% 1% 5%MyersMyers September 7–14, 2014 1,350 ± 2.7% 48% 46% 2% 3%SurveyUSASurveyUSA September 8–10, 2014 664 ± 3.9% 46% 42% 5% 7%Rasmussen Reports September 3–4, 2014 800 ± 4% 44% 42% 4% 10%NBC News/MaristNBC News/Marist September 2–4, 2014 795 LV ± 3.5% 48% 42% 1% 9% 976 RV ± 3.1% 48% 40% 1% 11%CBS News/NYT/YouGovCBS News/NYT/YouGov August 18 – September 2, 2014 1,727 ± 4% 46% 43% 2% 9%CBS News/New York TimesCBS News/New York Times July 5–24, 2014 2,020 ± 3% 50% 46% 2% 2%Public Policy PollingPublic Policy Polling July 17–20, 2014 653 ± 3.8% 44% 43% — 13%QuinnipiacQuinnipiac July 10–14, 2014 1,147 ± 2.9% 42% 44% 1% 13%Gravis MarketingGravis Marketing July 7–10, 2014 1,106 ± 3% 43% 47% 6% 4%NBC News/MaristNBC News/Marist July 7–10, 2014 914 ± 3.2% 48% 41% 2% 10%Rasmussen Reports June 25–26, 2014 750 ± 4% 43% 42% 6% 9%Magellan StrategiesMagellan Strategies June 6–8, 2014 747 ± 3.54% 45% 47% — 8%Public Policy PollingPublic Policy Polling May 7–8, 2014 526 ± ? 47% 43% — 10%QuinnipiacQuinnipiac April 15–21, 2014 1,298 ± 2.7% 45% 44% 1% 9%Public Policy PollingPublic Policy Polling April 17–20, 2014 618 ± ? 47% 45% — 8%Fabrizio, Lee & AssociatesFabrizio, Lee & Associates April 16–17, 2014 600 ± 4% 42% 44% 7%Gaylon Kent (L) 7%Magellan StrategiesMagellan Strategies April 14–15, 2014 717 ± 3.7% 45% 42% 5% 8%Harper PollingHarper Polling April 7–9, 2014 507 ± 4.35% 45% 43% — 12%Public Policy Polling March 13–16, 2014 568 ± 4.1% 42% 40% — 17%Harper PollingHarper Polling March 8–9, 2014 689 ± ? 45% 44% — 17%Rasmussen Reports March 5–6, 2014 500 ± 4.5% 42% 41% 5% 13%Public Policy PollingPublic Policy Polling April 11–14, 2013 500 ± 4.4% 49% 39% — 12%

Poll source MarkUdall (D) MarkAspiri (R) Other UndecidedQuinnipiacQuinnipiac November 15–18, 2013 1,206 ± 2.8% 45% 36% 1% 17%

Poll source MarkUdall (D) Randy Other UndecidedPublic Policy Polling March 13–16, 2014 568 ± 4.1% 44% 37% — 19%QuinnipiacQuinnipiac January 29 – February 2, 2014 1,139 ± 2.9% 43% 41% 1% 15%Public Policy Polling December 3–4, 2013 928 ± 3.2% 47% 40% — 13%QuinnipiacQuinnipiac November 15–18, 2013 1,206 ± 2.8% 44% 39% 1% 16%

Poll source MarkUdall (D) BobBeauprez (R) Other UndecidedPublic Policy Polling April 11–14, 2013 500 ± 4.4% 48% 41% — 11%

Poll source MarkUdall (D) KenBuck (R) Other UndecidedHickman AnalyticsHickman Analytics February 17–20, 2014 400 ± 4.9% 46% 42% — 12%Quinnipiac January 29 – February 2, 2014 1,139 ± 2.9% 45% 42% 1% 13%Public Policy Polling December 3–4, 2013 928 ± 3.2% 46% 42% — 12%Quinnipiac November 15–18, 2013 1,206 ± 2.8% 45% 42% 1% 12%Public Policy PollingPublic Policy Polling June 14–17, 2012 799 ± 3.5% 50% 35% — 15%

Poll source MarkUdall (D) MikeCoffman (R) Other UndecidedPublic Policy Polling June 14–17, 2012 799 ± 3.5% 48% 39% — 13%Public Policy PollingPublic Policy Polling December 1–4, 2011 793 ± 3.5% 48% 34% — 18%

Poll source MarkUdall (D) ScottGessler (R) Other UndecidedPublic Policy Polling April 11–14, 2013 500 ± 4.4% 50% 37% — 13%

Poll source MarkUdall (D) OwenHill (R) Other UndecidedPublic Policy Polling March 13–16, 2014 568 ± 4.1% 43% 38% — 19%Quinnipiac January 29 – February 2, 2014 1,139 ± 2.9% 44% 39% 1% 16%Public Policy Polling December 3–4, 2013 928 ± 3.2% 44% 37% — 18%Quinnipiac November 15–18, 2013 1,206 ± 2.8% 45% 39% 1% 16%

Poll source MarkUdall (D) DougLamborn (R) Other UndecidedPublic Policy Polling June 14–17, 2012 799 ± 3.5% 49% 36% — 15%

Poll source MarkUdall (D) JaimeMcMillan (R) Other UndecidedQuinnipiac January 29 – February 2, 2014 1,139 ± 2.9% 45% 38% 1% 16%Quinnipiac November 15–18, 2013 1,206 ± 2.8% 43% 40% 1% 17%

Poll source MarkUdall (D) JaneNorton (R) Other UndecidedPublic Policy Polling April 11–14, 2013 500 ± 4.4% 49% 38% — 13%Public Policy Polling June 14–17, 2012 799 ± 3.5% 48% 38% — 14%Public Policy Polling December 1–4, 2011 793 ± 3.5% 50% 33% — 17%

Poll source MarkUdall (D) BillOwens (R) Other UndecidedPublic Policy Polling June 14–17, 2012 799 ± 3.5% 47% 43% — 10%

Poll source MarkUdall (D) WalkerStapleton (R) Other UndecidedPublic Policy Polling April 11–14, 2013 500 ± 4.4% 50% 37% — 13%

Poll source MarkUdall (D) AmyStephens (R) Other UndecidedQuinnipiac January 29 – February 2, 2014 1,139 ± 2.9% 43% 41% 1% 15%Public Policy Polling December 3–4, 2013 928 ± 3.2% 44% 37% — 19%Quinnipiac November 15–18, 2013 1,206 ± 2.8% 45% 38% 1% 16%

Poll source MarkUdall (D) JohnSuthers (R) Other UndecidedPublic Policy Polling April 11–14, 2013 500 ± 4.4% 50% 38% — 12%Public Policy Polling June 14–17, 2012 799 ± 3.5% 48% 38% — 14%

Poll source MarkUdall (D) TomTancredo (R) Other UndecidedPublic Policy Polling April 11–14, 2013 500 ± 4.4% 51% 39% — 11%Public Policy Polling June 14–17, 2012 799 ± 3.5% 49% 39% — 11%

Poll source MarkUdall (D) ScottTipton (R) Other UndecidedPublic Policy Polling April 11–14, 2013 500 ± 4.4% 50% 37% — 13%

Results

By county