As secretary of state and Nevada's chief election officer in 2008, Miller led a voter registration investigation into the prominent anti-poverty organization, Association of Community Organizations for Reform Now. The investigation led to a search warrant being executed at ACORN's Las Vegas headquarters and eventually led to the filing of 39 criminal counts against ACORN, its Las Vegas field director Christopher Edwards and its former deputy regional field director Amy Busefink. In August 2009, Christopher Edwards pleaded guilty to reduced charges and agreed to testify against ACORN and Busefink. In 2008, Miller issued challenges to 21 term-limited incumbents who had filed for office in Nevada. They had been in office for at least 12 years, the limit specified in a 1996 state referendum. Miller's decision was the subject of a legal challenge which was ultimately unanimously upheld by the Nevada Supreme Court. As head of Nevada's commercial recordings division, Miller touted the implementation of a Nevada business portal which would create a "one stop shop" for business transactions with the state. Services offered would range from getting or renewing annual business licenses to registering vehicle fleets to paying state taxes by entering data just once and paying for all the services. The new Web site would also function as a clearinghouse for all payments, which would first go to the Secretary of State’s office and then be distributed to the cities and counties. Miller chaired Nevada's census efforts in 2010. Due to his personal relationship with Ultimate Fighting Championship president Dana White, Miller partnered with the UFC in a census awareness campaign which featured UFC personalities. Miller and White regularly train together in Mixed Martial Arts. In 2009, Miller was selected as one of "24 Rising Stars" in American governance by the Aspen Institute and awarded the Rodel Fellowship in Public Leadership. The program is a two-year fellowship designed to break down partisan barriers and to enable officeholders to step back from their daily responsibilities to consider broader questions of good governance. In 2013, The Fix named Miller one of the top ten rising stars in politics. Miller was considered a potential candidate to run for attorney general in 2014, with an eye on eventually becoming Governor of Nevada.
Electoral results
Miller was first elected in 2006, defeating Republican Danny Tarkanian with 48.73% of the vote. In 2010, Miller defeated Republican Rob Lauer by a margin of 53.17% to 37.27%.
Personal
In 2012, Miller won his first sanctioned mixed martial arts fight and immediately retired from competition.
