Trump endorsements can undermine incumbency

Local and national examples show incumbents with establishment backing and money losing in Republican primaries even when Trump is active — suggesting his interventions sometimes reset rather than consolidate party hierarchies. That dynamic unfolds alongside changes in voting laws, redistricting, and court decisions that alter who actually votes and which contests matter. — If true, this flips assumptions about party control: presidential influence may erode institutional stability and make electoral outcomes more chaotic, affecting policy continuity and governance.