Trump said that had he remained in office in 2020, the wars “would have never happened.” = Trump afirmó que, de haber permanecido en el cargo en 2020, las guerras "nunca habrían ocurrido".
other candidates could have taken part had President Joe Biden "gotten out sooner.". = Otros candidatos podrían haber participado si el presidente Joe Biden "se hubiera retirado antes".
Had he gotten out sooner, there may have been other candidates = Si se hubiera retirado antes, podría haber habido otros candidatos.