Trump is hurting the down-ballot candidates, both in terms of negative publicity and making the public weary of Republicans, but also in terms of finances.
Republicans/Republicans are having fundraising issues here and there, not helped that Trump is trying to drain not only the RNC's coffers, but the down-ballot coffers by charging them a percentage if they want to use his likeness or endorsement. Republican Presidential candidates in the past understood that you need to support down ballot candidates and they need to support you, because politics is local and stuff. Those down ballot candidates are the ones filling out school boards, and they are the county dog catchers, city council members, etc. who are actually on the ground at the local level and walking the block and knocking on doors and talking to their Bible study groups and shaking hands at the Gold Corral to get voters out.
When Trump loses again, there will be a real fight for power. Just like in college football, BMDs don't like tossing large sums of money at losers, and Trump, Three Toes, Boobert, Gym Jordan, Butthead, Doctor Feelgood, Comer Pyle, etc. will be on thin ice if they keep backing Trump. The GQP has course-corrected in the past when a strategy didn't win, and they will do so again, especially when the nutters mentioned above, as well as all of the others who are anti-abortion (and anti-contraception) won't shut the fuck up about abortion and contraception.
People like Nikki are hedging their bets on the slim chance that Trump wins, but when he loses, the batshit Republicans wanting a theocracy better watch their corn holes and not stop at any toll booths.