This is according to two pro-government pollsters, but they also link to one independent poll that seem to confirm the findings so far. Meduza is probably largest remaining opposition russian media.
Meduza is generally a credible source, and this article has an important nuance - there is huge support among older population _who watched government TV daily_. That is, interested in & highly aligned with the Kremlin's propaganda.
The same article say it's a ~50/50 split among people who are young, educated, or live in large cities.
Having interacted with older Russian people on few occasions they view themselves heroes of WW2. They genuinely dont know what happened between 1939 and 1941 and dont understand west looking at Russia funny, why USSR fell, or why someone would refuse Putins "help".
The same article say it's a ~50/50 split among people who are young, educated, or live in large cities.