Joe Raedle/Getty Images In an address to top Republican National Committee donors on Saturday, former President Donald Trump revived false claims that he won the election and called Senate Minority Leader Mitch McConnell a “dumb son of a bitch” for not backing his efforts to overturn the results. His remarks, which took place at a gathering that would typically be used by GOP leaders to reflect on their party’s recent loss of the White House and the Senate, underscored his continued devotion to sowing discord and spreading disinformation within a party still largely in thrall to him. The location of the RNC donor retreat points to Trump’s strong grip on the party. Most of the events took place just a 10-minute drive south of Trump’s Mar-a-Lago Club in Palm Beach, Florida, at a Four Seasons resort. On Saturday night, participants — which included not just fundraisers but also Republican party officials and lawmakers — were shuttled to Mar-a-Lago to attend Trump’s private speech.