YORBA LINDA — Political commentator Bruce Herschensohn, a longtime fixture on Southern California television and radio, former aide to Presidents Richard Nixon and Ronald Reagan and Republican candidate for a U.S. Senate seat in 1992, has died at the age of 88. Herschensohn’s death was announced Tuesday by the Richard Nixon Foundation in Yorba Linda. The cause of death was not released. “One word defines Bruce Herschensohn: patriot,” said Hugh Hewitt, the Nixon Foundation’s president. “A resonant, mellifluous voice for freedom, he was always calm, always insistent on the truth that people needed to be free, wanted to be free...