Former U.S. Rep. Tulsi Gabbard spoke last week at a Trump rally in Las Vegas, during which she described her departure from the Democratic Party: “I joined the Democratic Party over 20 years ago. ... And at that time, I saw a party that was the ‘big tent’ party.” That, according to Gabbard, is no longer true.Former presidential candidate Robert F. Kennedy Jr. also left the Democr...