Des Moines Register ends tradition of endorsing presidential candidates. Here’s why. KCCI Des MoinesMore than 250,000 Washington Post readers cancel subscriptions in revolt over non-endorsement CNNTrump: Newspapers pulling endorsements means ‘I’m doing a great job’ The HillBezos’ bubble bursts with bobbled endorsement call | Brier Dudley The Seattle TimesFor Jeff Bezos and his businesses, Washington has become more important The Washington Post