D's got caught because they were out of practise .

GOP has not been able to challenge them for 40 years .

https://www.investmentwatchblog.com/end-of-1982-consent-decree-gop-finally-can-contest-vote-fraud-after-36-years/

https://www.msnbc.com/opinion/republican-voter-suppression-efforts-were-banned-decades-here-s-what-n1243482

"For the past 40 years, the party organization has been bound by a "consent decree" secured in federal court in 1982. As a result, the GOP was barred from engaging in these kinds of "election security" campaigns, which seem to be little more than efforts at voter intimidation and election interference."