You might like what Sen. Rand Paul has to say. His pre-announcement video shows someone that is different from the same old Republican establishment candidates (read Jeb Bush etc). He’s reaching grandparents and grandchildren with his theme to “stand up to defeat the Washington machine.”
David Boaz of the Cato Institute and author of The Libertarian Mind: A Manifesto for Freedom writes:
Many people have suggested that Paul’s somewhat non-interventionist foreign policy views won’t sit well with Republican voters. They should read fewer neoconservative pundits and more polls. According to a CBS/New York Times poll last June, 63 percent of Republicans thought the Iraq war wasn’t worth the costs. Paul is likely to be the only one of 10 or so Republican candidates to take that position. As neoconservatives and John McCain beat the drums for military action in Syria in 2013, Paul opposed it. Republicans turned sharply against the idea — 70 percent against in September 2013. Americans, including Republicans, are getting tired of policing the world with endless wars. Interventionist sentiment has ticked up in the past few months as Americans saw ISIS beheading journalists and aid workers on video. But I would predict that 9 months from now, when the voters of Iowa and New Hampshire begin voting for presidential candidates, Americans will be even more weary of nearly 15 years of war, and U.S. intervention will be even less popular than it is now.