The first and absolute bare minimum for getting a true right-wing party and not more Zionist neoliberals that run the Reps, is that the Dems fracture between the mainline corporate types and a progressive or racial identitarian caucus. Andrew Jackson managed to win a sizable plurality in both the electoral college and the popular vote in 1824, and all three opponents at the time united against him to force in John Quincy Adams. The two-party system was born immediately after Jackson's presidency and has dominated ever since, with the occasional spoiler usually throwing the election in favor of the less-aligned candidate. Basically 200 years of precedent. Add in the fact that the GOP is literally dying, likely to see ~25% declines from demographic change alone within one generation, and the idea of a Hitler-esque victory (plurality winning the endorsement of a major party) seems especially unlikely. Our government is structured too differently for that to ever happen.
Something that has only dawned on me over the last year is that spoilers tend to be noticed by the major parties, yet crushed. LBJ, a firm Southern anti-civil rights rep in the 1950s, made a 180 after Southern spoilers threatened multiple consecutive elections. When protectionist Perot threatened to defeat HW and Clinton until he made the retarded decision to drop and then restart his candidacy, it ushered in an unprecedented era of free-trade deals, culminating in China being granted Most Favored Nation status and the rapid implosion of American industry. As the small-yet-significant influence of libertarian values threatens recent elections with razor-thin margins, the new Populists(tm) like Tucker Carlson (a CATO Institute ex) use mega-corps as proxy libertarian foes while left-liberalism fuses openly with neoconservatism in the new war on domestic terror. For a major party to adopt and siphon off a foreign plank is to give power to new untested actors, and make that plank a part of the debate. By contrast, to simply humiliate the foreign plank into disappearance is to remove it from the voters' minds and to force them to vote on the available options, or to force them not to vote at all.
I've changed my party registration from Libertarian to Democratic for this reason. Ilhan Omar is unironically among the best and most meaningful allies of the right at the moment. The only way to defeat one of the major parties is to drive a plank that they cannot possibly endorse, e.g. BDS.
