Yay, thanks so much for doing this research Igor!
I just donated to a few, and here's the main link again for visibility:
https://docs.google.com/document/d/1qjWD2ybsa94DLbXCkJMjXCP-xcfYnGn_oAQum2_Q5Zs/edit?usp=sharing

P.S. Also added a note at the end on the "Get Mitch Or Die Trying" campaign that caught my eye (money gets split evenly across the close Senate races, or you can choose how to split it), which has a cool matching effort on Twitter that may still be going (and even if it's over, very inspiring to see: https://twitter.com/buildsghost/status/1307150700606943232)

On Sun, Sep 20, 2020 at 6:48 PM Igor Serebryany <igor47@moomers.org> wrote:
hi folks,

if you're looking to give money to senate races today, i've done a bit
of research on the most impactful races to give to. probably, the
biggest impact is to give to races that are leaning dem, followed by
toss-up races (unfortunately, as much as I like Amy McGrath, she is a
pretty long shot to actually defeat Mitch in November).

Here's the doc, feel free to share, comment, and edit. Let's take back
the Senate!
https://docs.google.com/document/d/1qjWD2ybsa94DLbXCkJMjXCP-xcfYnGn_oAQum2_Q5Zs/edit?usp=sharing

<3,
--igor
_______________________________________________
chrysalis.giving mailing list
chrysalis.giving@moomers.org
https://mailman.moomers.org/listinfo/chrysalis.giving