A former Republican member of Congress who left the party in protest of former President Donald Trump’s grip on the GOP is calling on anti-Trump Republicans to take their opposition to Trump seriously all the way through November. During a Tuesday segment on MSNBC’s Deadline White House, former Rep. David Jolly (R-Florida) told host Nicolle Wallace that while he appreciates former UN ambassador Nikki Haley’s numerous criticisms of Trump on the campaign trail, none of it will matter if she still ends up endorsing him in the event he wins the GOP presidential nomination. “You have built your cam…