The Carter Center has a long history of profoundly deep expertise fielding strictly nonpartisan election observation missions across the globe.  They were on the ground in the US to observe Georgia’s 2022 risk-limiting audit.

And now they’re out with preliminary findings from what they’ve described as a pilot for future observation programs: a partnership with the Montana Election Observation Initiative to monitor the Missoula primary.  This sort of professionalized mission, with fulsome reporting premised on real understanding of election administration and the diversity of laws and procedures, could be a welcome model.