In 2014, Brown ran in the Republican primary for the District 10 seat in the
Texas House of Representatives. He finished in third place with 27.5% of the vote. In 2021, Brown launched his campaign to become a US Senator from Nevada. His campaign drew national attention, both from media and fundraisers. He raised over $1 million every quarter of his campaign as he challenged
Adam Laxalt, a Republican who was endorsed by
Donald Trump for the US Senate seat. Brown received the support and endorsement of local and state political party leaders, but lost in the primary election, receiving 34% of the vote to Laxalt's 56%. After this loss, Brown formed the Duty First PAC. As of August 2023, the Duty First PAC had spent most of the contributions it had received to repay debts from Brown’s 2022 campaign, with 7% of its spending going to other Republican candidates.
2024 U.S. Senate campaign In July 2023, Brown announced his second candidacy for a Nevada U.S. Senate seat, this time challenging incumbent Democrat
Jacky Rosen in the
2024 election. His Republican challengers for the Republican nomination included former Trump administration Ambassador to Iceland
Jeff Gunter, former Nevada State Representative
Jim Marchant, and ten other candidates. His campaign was endorsed by U.S. Republican senators
Steve Daines of Montana and
Marsha Blackburn of
Tennessee. In February 2024, Brown's wife, Amy, spoke about an abortion she had in Texas just prior to meeting her husband. Sam Brown opposes a federal abortion ban and supports Nevada's current law that legally protects the right to an abortion. Brown had previously supported a 2013 Texas law banning abortion after 20 weeks that did not provide exceptions for rape or incest. In June 2024, Trump endorsed Brown in the Republican primary. Brown was a featured speaker at the 2024 Republican National Convention in Milwaukee, speaking on unity and the high cost of war. During Trump's nomination acceptance speech on the final night of the convention, Trump praised Brown, saying: "[Brown] paid the biggest price probably ever paid by anybody that is running for office, and I think he is going to do great." Brown was the only 2024 U.S. Senate candidate mentioned by Trump during his speech. Despite Trump winning the state of Nevada in the concurrent
presidential election, Brown was defeated by Rosen, receiving 46.2% of the vote to Rosen's 47.9%. == Under Secretary of Veterans Affairs for Memorial Affairs ==