Horn worked as a liaison between Blue Cross-Blue Shield and physicians from 1986 to 1990, worked with her husband at his management-consulting firm from 1990 to 1997, was a print journalist at The Telegraph of Nashua from 2002 to 2008, and a radio talk-show host from 2006 to 2008.
Political involvement
2008 congressional campaign
In the 2008 campaign for representative for the second congressional district of New Hampshire, Horn ran against incumbent Paul Hodes. Horn defeated four other primary opponents in her first political race. The campaign included a televised debate.
2010 congressional primary
In 2010, Horn ran for the Republican nomination for District Two's House seat against former U.S. Representative Charlie Bass. Bass defeated Horn by 8 points and narrowly won the general election.
Political activism
In 2011, Horn founded the conservative non-profit organization We the People: A First in the Nation Freedom Forum, which she terminated following her election as Chairman of the NH GOP. Its founding principle was the bolstering of freedom via the promotion of personal responsibility and limited government. The organization sponsored town hall type meetings through New Hampshire in the lead-up to the state's first-in-the-nation primary. Rick Santorum spoke at one of the organization's events on April 30, 2011. Horn chaired the New Hampshire Republican State Committee's platform committee in 2012.
Chair of the New Hampshire Republican Party
Horn won the state GOP chairmanship on January 26, 2013, defeating Andrew Hemingway in an election to replace the outgoing chairman, Wayne MacDonald. She had the backing of U.S. Senator Kelly Ayotte and outgoing congressmen Frank Guinta and Charlie Bass, along with 40 other elected officials. In the closing weeks of the election, she faced scrutiny for a $92,000 IRS lien and another $230,000 in campaign debt. The debt was in the form of a loan that Horn had made to the campaign. Thus, it was money due to Horn personally from the campaign. Her IRS debt was subsequently paid in full and the lien removed. Both Horn and her opponent Hemingway had characterized the release of the information by fellow Republican Joe Barton as a "personal attack" that had no place in the election. As New Hampshire GOP chair, she has attacked the state Democratic Party for what she has termed "drive-thru" voting. Horn contends that voting by out-of-state Democratic volunteers, including the niece of Vice PresidentJoseph Biden, in New Hampshire elections is illegal and constitutes voter fraud. She accused Democratic state SenatorMartha Fuller Clark of midwifing a "sanctuary of voter fraud" by allowing four out-of-state campaign volunteers to use her address for their voter registrations. Horn also announced she supported Republican National Committee Reince Priebus's proposed boycott of CNN and NBC, threatening to deny them Republican participation in the 2016 presidential debates, if the two networks went ahead with their proposed projects featuring Hillary Clinton.
Trump presidency
Since Donald Trump took office as president, Horn has been one of his most prominent Republican critics. Along with several other prominent Republican strategists, she cofounded the Lincoln Project, which aims to defeat Trump and his supporters in Congress.
