To be clear, the federal election bill is -dead-. Right now the Biden admin is having trouble getting their director of the ATF in, let alone a massive election federalization bill that would have a hard time passing even the courts legendary hesitance when it came to lawsuits. Right now it simply has too many barriers to even be worth the -try-.
1: The filibuster.
2: The Blue Dogs
3: Court cases, LOTS of them,. Like, every single red state and a few purple ones.
4: Simple non-compliance.
In order to pass this, they'd need to kill the filibuster. Already a hard sell since even the frontman for the Blue Dogs has said it's a non-starter, only going so far as to present a token 'proposal'; of reducing it to 55. Something he knows will never be accepted because -even the RINOs- refused to vote for this. But, let's say by some miracle they do. The RINOs -still absolutely refuse- so now you need to convince every single Blue Dog to then also vote for it. Absolutely -no- detractors can be had or it cannot pass. That is 4-5 votes they absolutely need to get, need to control, and who all need to sign off on -blatant- immorality. Everyone is the good guy in their own story, and squaring that bill with morality is really, -really- hard. Hard enough that there are even whispers that non-blue dogs don't want to vote for it.
But hey, if by some miracle it passes -that- hurdle we begin lawsuit hell. Now, SCOTUS is traditionally really, really hesitant to take up any cases which would set a major precedent or change prior law. Well, good thing this would be -neither-. It's blatantly, overtly unconstitutional. Like, not even sorta arguable, it's literally a case of "The constitution, verbatim, says this is wrong". So no major precedent other than "No, you can't federalize elections". And it would be a brand new law, not long-standing law soooo. Yeah, very good chance SCOTUS takes the case and just goes "no".
But hey, let's say that either SCOTUS takes it too slowly or somehow drops the ball harder than even IT had ever dropped it before. And yes, that's counting the bullshit of the 2020 election. Well... there is very little way to actually -enforce- the law. As in, at all. Ever. Good luck getting red states or even Republican-controlled states to comply. And the only way to force it is to take it to the self same courts that would have punted it to begin with, in this scenario.
And that leads into the final note. The bill is political -poison-. It's unimaginably, unbelievably unpopular when shown in anything but the vaguest light. Even otherwise safe democrats would be at risk of losing their seats if it fails at any point at all.
The bill is dead, and it would take a legit act of god to make it breathe again.