This analysis from commenter “Correcting” finds the Republican Party in decline and Democrats on the rise when looking at Precinct Committee Person, County Board filings:
My counting could have been off; feel free to double check.
In 2016, 35 Democrats were elected PC and 153 Republicans were elected PC.
In 2018, the Democrats had 62 precincts filled through election and Republicans had 136.
Today, Democrats are competing for 55 precincts and Republicans are competing for 76.
In 2016, 22 Republicans ran for County Board in the primary.
In 2018, 16 Republicans ran for County Board in the primary.
Today, Republicans have 12 candidates for County Board.
So between 2016 and now, you have about 50 percent fewer Republicans running for County Board and PC.
That sounds like a dying a political party.