So individuals donated $836,212 to candidates in 2020. The max you can donate to a candidate is $2,800. So if we say that no one donated to more than one candidate, which is pretty hard to believe, that means 299 (rounded up) individuals donated. In December 2020 Twitter had 5500 employees. That isn't even remotely a case for and I quote.
Why not? Do you have some data that conflicts with that? Do you object to, for example, polling data because only a subset of people are polled? Not everyone is necessarily going to make a donation to a political pary, of those who are motivated to do so the split is quite stark, California is generally, broadly left-leaning but compare to say Oracle or IBM employees etc.. Or even to younger tech firms like google etc. All of these firms will have a big majority of dem donors, even Elon Musk is US liberal/on the left and is/was a democrat supporter.