36, Lawyer, Orator, from Illinois originally, pushed period of transition from popular Democratic leader (Grover Cleveland). Also, he was of Irish heritage (which basically meant minority status at the time).
...At the 1896 Democratic National Convention, Bryan galvanized the silver forces to defeat the Bourbon Democrats, who supported incumbent President Grover Cleveland and who had long controlled the party. His famous "Cross of Gold" speech, delivered prior to voting for the presidential nominee, lambasted Western monied classes for supporting the gold standard at the expense of the average worker. Bryan's stance, directly opposing the conservative Cleveland and the Bourbon Democrats, united the agrarian and silver factions and won him the nomination. Just 36, the youngest presidential nominee ever, Bryan formally received the nominations of the Populist Party and the Silver Republican Party in addition to the Democratic nomination...
http://en.wikipedia.org/wiki/William_Jennings_Bryan#First_battle_for_the_White_House:_1896 One extreme warning from history here: Bryan lost to McKinley in 1896 because McKinley had a more compelling plan for economic prosperity.