(Bloomberg) -- Mexico’s ruling party Morena approved four external polling companies that will conduct surveys to determine who will be their candidate for the 2024 presidential elections.Most Read from BloombergUS Consumers Near Day of Reckoning as Pandemic Cash Stash ShrinksVietnam Tycoon Loses $18 Billion After EV Maker’s Shares SinkBiden’s Top Lawyer to Depart White House as Probes Ramp UpBiden Wants to Sell His Economic Plan to Voters. He Faces One Big ProblemCohn and Summers Talk Trump, Ch