[...] as he courts voters in three states, the 52-year-old Republican is putting new distance between himself and the rest of his party's presidential hopefuls. Yet it's unclear how far his civil liberties focus resonates beyond the libertarian-leaning voters who supported his father's presidential ambitions. In any event, Paul's passionate defense of civil liberties remains the centerpiece of his platform. Expiration would mean suspension of a program revealed by Edward Snowden that collects data on every American landline call, as well as of two FBI programs to track terrorist suspects. Even in the midst of last week's Senate marathon session, Paul took to Twitter to invite supporters to buy $30 "Filibuster Starter Packs" with a bumper sticker, T-shirt and a "spy blocker" for Internet browsers. New Jersey Gov.