Advocates of letting independent voters vote in partisan primaries constantly say that independents are moderates, and letting independents vote in partisan primaries helps elect moderates. Research overwhelmingly rebuts this assumption. Yet another example is the roll call vote of March 9 on HR 6968, to ban oil imports from Russia. It passed with only 17 “no” votes. The “no” votes came from these members of Congress: Andy Biggs (Arizona), Dan Bishop (North Carolina), Lauren Boebert (Colorado), Cori Bush (Missouri), Madison Cawthorn (North Carolina), Scott Des Larlais (Tennessee), Matt Gaetz (Florida), Louis Gohmert (Texas), Paul Gosar (Arizona), Marjorie Taylor Greene (Georgia), Glenn Grothman (Wisconsin), Clay Higgins (Louisiana), Thomas Massie (Kentucky), Ilhan Omar (Minnesota), Bill Posey (Florida), Chip Roy (Texas), and Tom Tiffany (Wisconsin).
Only three of these seventeen are from states with closed primaries. This shows once again that there is no correlation between type of primary, and what kind of person gets elected.
This is as a straw-man argument.
The purpose of an election is for all the members of an electorate to choose who represents them.
If the purpose was to produce a particular outcome it would be better to have no elections at all.