By supporting Trump they are signing away any chances they have to win. Ron Brownstein lays it out: The dilemma for the Republican Party is that Donald Trump’s mounting legal troubles may be simultaneously strengthening him as a candidate for the GOP presidential nomination and weakening him as a potential general-election nominee. In the days leading up to the indictment of the former president, which Manhattan District Attorney Alvin Bragg announced two days ago, a succession of polls showed that Trump has significantly increased his lead over Florida Governor Ron DeSantis, his closest competitor in the race for the Republican nomination. Yet recent surveys have also signaled that this criminal charge—and other potential indictments from ongoing investigations—could deepen the doubts about Trump among the suburban swing voters who decisively rejected him in the 2020 presidential race, and powered surprisingly strong performances by Democrats in the 2018 and 2022 midterms. “It is definitely a conundrum that this potentially helps him in the primary yet sinks the party’s chances to win the general,” says Mike DuHaime, a GOP strategist who advises former New Jersey Governor Chris Christie, a potential candidate for the 2024 Republican nomination. “This better positions [in the primary] our worst candidate for the general election.” That conundrum will only intensify for Republicans because it is highly likely that this is merely the beginning of Trump’s legal troubles. As the first indictment against a former president, the New York proceeding has thrust the U.S. into uncharted waters. But the country…