In Belief in conspiracies largely depends on political identity, it's reported that many democrats reported positively to a question about whether Russia tampered with the vote tallies for the 2016 presidential election:
Half of Clinton’s voters think Russia even hacked the Election Day votes (only 9% of Trump voters give that any credibility at all).
As far as I know, Democrats aren't actually alleging that the vote tallies are hacked. Instead, they allege that Russia encouraged people to vote Trump, including by hacking Democrat emails. Are Democrats actually promoting the claim that vote tallies were hacked?