Medicare for all polls over 70%, even most republicans support it.
https://thehill.com/policy/healthca...percent-of-americans-support-medicare-for-all
https://thehill.com/hilltv/what-ame...blicans-say-the-support-medicare-for-all-poll
Raising minimum wages usually gets support from both sides, though of course "by how much" differers a lot depending on area.
https://thehill.com/homenews/335837-poll-bipartisan-majority-supports-raising-minimum-wage
Trump and Sanders both seem to be pretty strongly "anti-offshore tax haven."
I haven't ever seen any polls in the US, but, Canada polls around 90% of people being against tax avoidance though offshore tax havens.
https://www.theguardian.com/busines...rms-is-morally-wrong-say-nine-out-of-10-in-uk
Net neutrality is supported almost universally.
He has been strongly for civil rights since at least the 1960s when he marched with MLK, just about everybody I have ever met has been pro "civil rights", even my old racist grandma agrees that black people should be allowed to vote and own property.
Many of his positions line up with the the de facto democrat position which is opposed by a majority of conservative voters, however, that is practically universally true among all democrats (womens rights, Opposition to death penalty, universal background checks, seperation of church and state)
Here are most of his well documented stances/positions
https://en.wikipedia.org/wiki/Political_positions_of_Bernie_Sanders
I don't feel like doing research any more, but, he generally polls as the "most popular senator" in the entire history of the US. He does have some controversial stances on things, but, overall, his platform is well thought out and he is among the most consistent in Washington.