This an interesting piece from Ballot- Access News. Here  is an excerpt : 

In the 32 jurisdictions that provide for registration by party, the figures for October 2022 show that the share of voters registered in minor parties and as independents has hit a new high. 31.67% of registered voters in those places are not members of either the Republican or Democratic Party.

In past even-year October tallies, the number of registrants outside the two major parties has been: 2020 30.82%; 2018 30.90%; 2016 30.03%; 2014 29.04%; 2012 28.05%; 2010 26.44%; 2008 25.66%; 2006 25.97%; 2004 25.02%.

The data will be printed in the December 1, 2022 Ballot Access News, by state and by party.

Read the full story here.