the margin of error weeks and weeks before the race, and then just hyped it relentlessly and thus we shit away tens of millions of USD on a wish fulfilment (because of Graham being so hated) race (the same with other pipe dream States like TX and KY, and to a point Maine) that could have went to to States like MT (Bullock was a solid candidate) and, to a lesser extent, IA where they did have leads at one time but then got BURIED by tens of millions of RW dark money adverts the last 2,3,4 weeks of the race, and neither campaign had the cash to respond effectively.
Schumer and Cortez Masto did a pretty poor job recruiting too, and there are multiple people who I will have a hard time forgiving for not running, especially Tim McGraw who TWICE (2018 and 2020) refused to run for open seats after promising for 10 years he would run when he turned 50 (2018, when he was 51, he would have smashed that POS RWNJ Blackburn in that Blue Wave, and in 2020 at least would have had a decent shot at another open seat), Jeff Jackson (and also Foxx and Stein) in NC, all 3 refused to run leaving us with that sexting scandal clown Cal Cunningham, who blew a pretty decent lead against a weak AF Tillis in those last few weeks with his damn sex scandal.
Also, Stephen King in Maine (I really think he would have beaten Collins, instead we ran a non native, and Maine almost never elects non natives, plus Manchin fucked us hard with his endorsement of Collins, grrr, so so much money wasted there, and in all those sates I mentioned before, they had so much extra cash that they never spent tens and tens of millions, and the national apparatus did a shit job moving it around).
Also, Vilsack in IA (or even Axne) would have been far stronger, Sebelius in KS (the ONLY shot we had there, and KS insiders said she had a decent shot to win that open seat, but she refused), and finally Mark Begich in Alaska (who had ran and won the US Senate before, but he also refused, and we ran no Democrat at all, we had to rely on a weak indie, Gross). We had many chances to nullify Manchin and Sinema THIS term (Jan 3 2021 to Jan 3 2023), and we blew it, especially against some of the weaker Rethug candidates.