This afternoon's revelation from The Intercept demonstrates that the investigation into Russia is (or at least can be and should be) a very serious matter:

Russian military intelligence executed a cyberattack on at least one U.S. voting software supplier and sent spear-phishing emails to more than 100 local election officials just days before last November's presidential election, according to a highly classified intelligence report obtained by The Intercept.

It's worth reading the whole report on this. But consider also for a moment the loose and careless way in which Russian involvement in the election has been heretofore described.

Here's what we actually know happened: Russian cyber propaganda, along with the Russian hack of DNC and Clintonworld emails, weakened Hillary Clinton's campaign by forcing it to respond to both fake and true news items that made her look bad.

What do most Democrats believe happened? That the Russians hacked the election result, causing Donald Trump to win.

And no, I'm not just saying that. That's what polling shows Democrats believe. As frequent NRO contributor Dan McLaughlin pointed out earlier today on Twitter (using slightly older numbers), the latest available polling on the question shows that 58 percent of Democrats actually do believe the Russians "definitely" or "probably" "tampered with vote tallies in order to get Donald Trump elected president."

This belief goes a long way toward explaining anger over his victory, but it also isn't backed up by anything we've seen so far, including today's new report.