Donald Trump vowed to help Republicans win seats in Congress in 2022 elections but lashed out at two top party figures, Senate minority leader Mitch McConnell and former Vice President Mike Pence, at a donor retreat on Saturday. At a dinner at his Mar-a-Lago Club for Republican National Committee donors in Palm Beach, Florida, the former president made clear he is still irked at his inability to hang on to the White House despite losing the Nov. 3 election to Democrat Joe Biden, who is now president. Mr McConnell drew Mr Trump's ire in the aftermath of the election for stating the obvious - that Mr Biden had won the presidency - and the two remain at odds. Parting from the prepared text of his speech, Mr Trump called the senator a "son of a bitch," an attendee told Reuters. Before leaving office, Mr Trump had scolded Mr Pence for not intervening to stop the congressional certification of the vote tally, an authority the vice president did not have. The vote certification was the backdrop for the events on Jan. 6 when pro-Trump protesters stormed the U.S. Capitol. Departing again from his prepared text, Mr Trump said he had spoken to Mr Pence recently and told him he was still disappointed in him, the attendee said. Representatives for Mr McConnell and Mr Pence did not immediately respond to requests for comment. In prepared remarks seen by Reuters, Mr Trump sought to position himself as the Republican kingmaker, saying he wanted to talk "about the future of the Republican Party - and what we must do to set our candidates on a course to victory." "I stand before you this evening filled with confidence that in 2022, we are going to take back the House (of Representatives) and we are going to reclaim the Senate. And then in 2024, a Republican candidate is going to win the White House," he said. Mr Trump has spent the 2-1/2 months since his chaotic exit from the White House considering requests from 2022 candidates for his endorsement and has been giving them his blessing based on whether they support him and his agenda or not. He has said any talk of his own plans - the Constitution gives him the right to seek another four-year term - should wait until after the November 2022 elections. A variety of other Republicans are considering their own potential runs for the party's presidential nomination in 2024, such as Trump's former secretary of state, Mike Pompeo, and Florida Governor Ron DeSantis. While Mr Biden defeated Mr Trump by millions of votes, the Republican made inroads among traditional Democratic voters such as Hispanics and African Americans. Mr Trump, who also sprinkled his remarks with attacks on Mr Biden, said the key to victories in 2022 is to build on those gains, saying "the Republican Party will succeed and grow in the future by embracing its destiny as the champion of working-class Americans." Mr Trump's active role in Republican politics despite losing the 2020 election is unlike other former presidents, who have tended to retreat from the limelight after leaving the White House. “Saturday’s speech will be welcomed words to the Republican donors visiting Mar-a-Lago to hear directly from President Trump. Palm Beach is the new political power centre, and President Trump is the Republican Party’s best messenger," said Trump adviser Jason Miller.