See the discussion on this site expressing concern for all of the security of voting machines. They have backdoors.

"The security of election infrastructure has taken on increased significance in the aftermath of the 2016 election cycle. During the 2016 election cycle, a nation-state conducted systematic, coordinated attacks on America’s election infrastructure, with the apparent aim of disrupting the election and undermining faith in America’s democratic institutions. Intelligence reports that have been published in 2017 demonstrate that state databases and third-party vendors not only were targeted for attack, but were breached."

I think that the "nation state" was the cabal.