Political scientists Seth Masket and Michael G. Miller have made available a draft of their study of public funding for legislative candidates in Maine and Arizona. They find that public funding programs do not help elect more extreme candidates. Here is their article in the Washington Post about their research, and here is the draft of their paper, which is not yet final. Thanks to the Center for Competitive Politics for the links.
The robot party hack nomination systems and the nonstop minority rule gerrymanders produce the nonstop extremists — leftwing Donkeys and rightwing Elephants.
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NO primaries.
P.R. and nonpartisan App.V.