Donald Trump's ascent to the presidency can be largely attributed to the failure of traditional party gatekeepers at critical moments in the political process. These gatekeepers, who typically influence candidate selection and manage party integrity, struggled during the invisible primary, in which potential candidates are assessed before formal primaries begin. This lack of oversight allowed Trump to gain momentum unchecked.

Additionally, the inadequacies of the gatekeeping process were evident during the actual primaries and the general election. As established party structures faltered in their ability to control or vet candidates, Trump's unconventional campaign style resonated with voters, ultimately leading to his unexpected victory. The dynamics of gatekeeping were crucial in enabling his rise in a polarized political landscape.