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And I disagree it's more accurate. I was looking for what each Senator's voting record was in relationship to Joe Biden's or Democratic leadership's position was on legislation. That is what the link I posted was measuring. This link from 538 measures the same thing.
https://projects.fivethirtyeight.com/biden-congress-votes/ I also found another site a few weeks ago that had slightly different numbers than the ProgressivePunch website, but was similar in overall rating. Unfortunately, I can't find that link again, but I posted this about the data from that link on Dec. 14:

"Hell he's not even close to Jon Tester who voted with Biden less than 75% of the time. (Fetterman voted with Biden 92% of the time, Warren 92.9%, Bernie Sanders only 89.%, Manchin 35.7%)."

Back to the original point. Sinema was terrible but she did not "frequently vote with Republicans". She did more often than most, but not nearly as often as Manchin & Tester. And Collins and Murkowski voted with Biden, far more often than Sinema voted against him.