AZ Senator Kyrsten Sinema has offered her thoughts regarding the reason she opposes changing the filibuster rules, and
the reason is--"it protects the democracy of our nation", and I don't know about that. Passing an act to ensure the voting rights of all the people eligible would protect our democracy. Relying on members of a party who have explicitly given up on the idea that that's a good thing seems badly mistaken.
It's too easy to focus on Sinema because of her earlier, progressive-alienating antics regarding the minimum wage. She isn't alone in being a Democratic Senator who is leery of abandoning the filibuster rule, she's just very visible (and she tries to be, and I guess that's part of the pile-on, too). But there's this dodgy history. So I don't want to pile on, but I do want to make a little suggestion:
Sometimes you have to understand what your voters put you were you are for. I think we've got a cycle where people are pretty pissed off that something isn't working in our politics, and you don't want to be the person who looks like they aren't working. So not showing up to vote for the January 6 investigation was pretty bad, because Arizona is one of the states that was and is very much challenged by GOP electoral fuckery, and it would be very meaningful to Arizona Democrats to know they had someone who would fight for them, instead of pussyfooting about. This state is changing and Republicans there are not happy--but it's still happening.
Here's where I'm cutting slack, though--I don't know, besides Sinema and Manchin, who else might be on the fence about breaking the filibuster, I have worries about Feinstein, because I don't know where her head is. Angus King has been reluctant. There could be others--so just putting the whole weight on Sinema and Manchin doesn't feel right, and there is the blowback--if something gets f'd up enough, and somehow GOP gains seats, a Republican-lead Senate in a filibusterless world is gonna ssuuuuuuuuccccckkkkk.
So, while Sinema seems kind of capricious, and yeah, I think I'm puzzled by her particular stance, Manchin's reasons are also kind of self-serving (but what if it were possible to try to generate more WV Democratic/progressive interest by bucking moderation for a bit--I did see Sanders signs down in WV during the 2016 primary and I think younger voters might be up for that), yet I don't know what other, deeper opposition exists, or what other political heads are trying to game out.
It would be great if we could just run down a wishlist of liberal policies at the moment and get'em done, but it's always going to be a fight. This is why every election counts. But damn it--the voting rights one just feels crucial for the elections to come! And I still don't get why Sinema voted against the minimum wage thing and her absence from the vote on the insurrection investigation still sort of feels off. AZ GOP is ridiculous, but that's actually all the more reason to go about the job of US Senator for AZ very seriously.