[Observator]

It’s not “theory”, it’s documented fact, posted to FR years ago.

This doesn't appear to be true. Here's a link that has historical voter registration for AZ.

You can see there was no massive uptick in Democratic voters in AZ from 2009-2010. Also, Republicans outnumber Democrats in AZ, so what you're saying just doesn't sound plausible.

Can you provide any source for your claims?

[Hostage]

Your research is deficient to say the least. You show no efforts, no data references, no related reports or commentary. You present zero analysis.

The Democrats that crossed over became Republicans for the primary. The increase in registered Republicans from 2008 to 2010was far above expected. Democrat commentary such as found on DU are replete with claims of crossing over to vote for McCain who voted and pushed illegal amnesty against Hayworth who was 100% against illegal immigration.

https://freerepublic.com/focus/f-news/2503154/posts

https://seeingredaz.wordpress.com/2010/01/28/mark-levin-on-j-d-vs-mccain-this-is-a-race-between-a-conservative-vs-a-phony%E2%80%9D/

Weiers, a former House speaker, called the complaint “cynical” and said people have a right to run under whatever political banner they choose. “If somebody wants to do it,” he said of the last-minute registration change, “there’s nothing illegal about it. There’s nothing immoral.”
https://www.tucsonweekly.com/TheRange/archives/2010/08/31/az-democratic-party-republicans-recruiting-sham-green-candidates