A new survey finds Harris substantially ahead of Trump among Latinos, a sign that she may be rebuilding the Democratic coalition—which is essential to defeating him.
Democrats have to do everything perfect to get enough of a coalition to win.
Republicans can openly be racist, ignorant about the law, trash on veterans/elderly/women, and still are in contention. I think it's the so-called Christians that are lacking morals.
which has cost them the advantage in 4 years elections since Obama
Maybe I'm misunderstanding what you're trying to say here because this sounds incomprehensibly stupid, but just in case... There have been exactly two presidential elections since Obama. Democrats won one and lost the other. Everything else is involves a multitude of candidates voted in strictly at the state or district level.