The machines in question vary in type, but most are scanners to aid in counting paper ballots. The others are touchscreen entry devices that print a paper ballot as a hard copy. Hand recounts of the paper ballots have been done -- statewide in Georgia, in one county in Michigan -- and not shown that the machines switched votes as alleged by Giuliani and pals. From here the conversation devolves into conspiracies about how the hand recounts weren't real recounts or fake ballots were printed to match the machine totals or something.

At which point the voting machine's role really doesn't matter because the fact is the people making these claims don't trust the paper ballot count either.