World War II. Remember how, like a dope, Donnie always graded himself by the market. And while Joe doesn't deserve all the credit, a lot of it does have to do with the highly successful Covid vaccine rollout and the Covid relief bill giving a jolt to the economy.
Now watch the righties claim: "But, but, but......"

Trump's at 100 days? A puny 40%.
And 68% of Americans favor Joe's infrastructure plan.
What do the Republicunts do about this? Tell lies like "Biden wants to ban eating red meat."

that said three days before the November election  that Biden would win Wisconsin by 17  points.  He won by  0.7 points, a 16 point disparity, so can we assume that Biden's REAL approval rating is 37?

About the suburbs being invaded by the "others" and your home losing it's value...lol
Home prices are on the uprise, it's a sellers market now.

You were schooled on this in a recent thread.  The 53% is the RealClearPolitics (RCP) AVERAGE of 13 polls by various networks & polling services.  His average polling is 53-42 (net positive of 11).

 
I looked up the Wisconsin poll you were referencing.  It was the ABC/Washington Post poll; it had Biden with a 57-40 lead in Wisconsin the week before the election.  That poll currently shows Joe Biden's job approval at 52-42 (+10).  All 13 polls used by RCP have Biden with a net positive job approval rating (even Faux at 54-43, +11).  Now YOU can assume his approval is at 37 (or 36, using the the actual ABC poll number), but those 13 current poll results tell a much different story.

the ABC/WaPo poll in Wisconsin was off by 16 points, but yet you want say the their current Biden poll is accurate at 52-42 because other polls came up with the same number?    Averages that are created from faulty underlying polling data do not miraculously make them accurate, just because SEVERAL polling outfits came to the same erroneous conclusion.  Garbage in, garbage out, remember?