Evidence that liberals are not very bright > Evidence that the sun is bright
This study is not needed to tell us that liberals wallow in stupidity every chance they get. Most are completely brainwashed by DNC propaganda to the point that they live in an alternate faux reality devoid of opposing ideas. Any idea contrary to their own beliefs are censored or dismissed as "conspiracy theory". It's what happens when you have entire news and entertainment industries devoted to propping up one political party due to ideological alignment and groupthink. All Americans would be much better informed if we had at least some sort of objectivity in our news media. Additionally, the Democrat party could actually be held accountable for their incompetence, gross negligence, intentionally destructive behavior, and corruption unlike now. As it is now, the Democrat party/MSM could declare the earth to be flat and 90%+ of liberals would be parroting it as the gospel on twitter tomorrow.
Examples of this are plentiful:
The rich don't pay their fair share.
Gun free zones make people safer.
The 2020 election was the most secure election in history.
EVs are going to save us from the global warming monster.
Trump is a Russian asset.
Biden is a good man.
All of those examples are patently false and completely idiotic, yet almost every liberal believes them because the DNC propaganda machine said they were true.
HTH