This is an older article, obviously, (and it's been edited significantly since it was first published, which could explain why it's still up) but it's become apparent over the past few months that a lot of people never even knew this existed. So lets read it in its entirety. The Secret History of the Shadow Campaign That Saved the 2020 Election | TIME
Also, this one is well worth the read if you've got some free time.
Trump’s Taxes Show Chronic Losses and Years of Income Tax Avoidance (nytimes.com)