Married in 1994, he and his wife Julie reside in the Dallas-Fort Worth area and have two children.
In a 2006 interview, Howell discussed his early career in some detail. Recruited by Lee Atwater to work for the RNC after his 1988 work for presidential candidate Bob Dole, Howell spent four years as a campaign operative before moving to Texas in 1992 to work for Karl Rove, then running a direct-mail firm. In 1993, Howell started his own political consulting firm, which has since grown into Scott Howell and Company.
- Jerry Moran of Kansas who defeated fellow Congressman Todd Tiahrt in a hotly contested primary in 2010
- John Thune of South Dakota, who defeated incumbent Senator Minority Leader Tom Daschle
- Tom Coburn of Oklahoma, who defeated Brad Carson
- Bob Corker of Tennessee, who defeated Harold Ford, Jr.
- Jim DeMint of South Carolina
- Lindsey Graham of South Carolina
- Saxby Chambliss of Georgia
- Jim Talent of Missouri
- Norm Coleman of Minnesota in 2002
Failed clients have included:
- George Allen, a United States Senator defeated in 2006 by Jim Webb
- Jerry Kilgore, defeated in 2005 by Tim Kaine in Virginia governor's race
- Rudy Giuliani who withdrew from the 2008 presidential primary season.
- Norm Coleman of Minnesota in 2008
Recent or current clients (2010) include:
- Meg Whitman, gubernatorial candidate in California; Jerry Moran, candidate for US Senate in Kansas; Linda McMahon, candidate for US Senate in Connecticut. US Senator Jim DeMint; US Senator John Thune.
 Notable campaigns
 2002 Georgia Senate Race
In 2002, Howell's client Saxby Chambliss defeated incumbent Senator Max Cleland. Supporters of Cleland blamed a Chambliss TV ad featuring the likenesses of Osama bin Laden and Saddam Hussein, while criticizing Cleland's votes against homeland security measures. The ad, which Cleland supporters claimed questioned the senator's patriotism, was removed after protests from prominent politicians including Republicans like John McCain and Chuck Hagel. Chambliss supporters claimed the ad didn't question Cleland's patriotism, but rather his judgment. Although these ads are frequently mentioned as examples of work by Scott Howell, Howell has repeatedly denied that he produced this particular ad.
 2006 Tennessee Senate Race
In October 2006, Howell was revealed as the producer, with Terry Nelson, of the "Harold, Call Me" attack ad used against democratic Tennessee Senatorial candidate Rep. Harold Ford Jr. in which a white woman said that she had met Ford at a Playboy party. The ad concludes with the woman speaking to the camera and saying to Ford "Call me."
- "Whitman's big win came at a price: $76 per vote" CaliforniaWatch (June 10, 2010)
- "The Buzz: Giuliani hires team behind ‘Harold, call me’ ads," "Kansas City Star," August 24, 2007 http://www.kansascity.com/news/nation/story/246784.html
- Cris Cillizza, "Insider Interview: Scott Howell -- GOP Imagemaker," Washington Post, February 13, 2006 http://voices.washingtonpost.com/thefix/2006/02/insider_interview_scott_howell.html
- Max Blumenthal, "Hitler in Virginia," "The Nation" online ed., October 26, 2005 http://www.thenation.com/doc/20051107/blumenthal
- Chambliss Ad (Cleland), YouTube, August 25, 2006
- Slate.com: The Democrats' favorite victim
- The Atlantic: The Daily Dish: Quote for the Day. November 12, 2008.
- The Orlando Sentinel: Ex-senator Boosts Kerry, Battles Critics. June 13, 2004
- Coulter, Ann (December 31, 2008). "Teaching Democrats New Tricks". Retrieved 2009-01-23.
- Grant Perry, "Rudy - Call Me," Yahoo News - opinion column, August 25, 2007
- CBS News/AP, "Rove protégé Behind Racy Tennessee Ad," October 26, 2006
- David Miller, "Pure Horserace: Rove's Mixed Legacy: Bush's Political Guru Rewrote The Electoral Playbook, But Couldn't Implement Policies," CBS News August 13, 2007 http://www.cbsnews.com/stories/2007/08/13/politics/purehorserace/main3162644.shtml
- Biography, voting record, and interest group ratings at Project Vote Smart
- Issue positions and quotes at On the Issues
- 2002 contributions by Scott Howell and Julie Howell to Oklahoma campaign of Republican Tom Jeffrey Cole.
- 2006 contribution by Julie Howell to "Friends of George Allen - Republican".
- "In Rove's Footsteps, They Learned From The Master," "Newsweek," October 2, 2006
- CBS News/AP, "Rove protégé Behind Racy Tennessee Ad," October 26, 2006.
- Scott Howell & Company.