Let's see:
Start with no voter ID. Anybody could claim to be anyone either in person or using mail-in ballots. It's odd that we'd want this in a society were virtually everyone has ID. Even odder, almost all other nations require voter ID.
https://www.investmentwatchblog.com/almost-all-developed-nations-require-voter-id-why-not-the-us/
https://www.nccivitas.org/civitas-review/fact-check-international-voter-id-laws/
It is an absurd stretch of logic to try and argue that voter ID would somehow disenfranchise voters, and even more absurd to try to turn this into a issue about race.
Ballot harvesting and ballot drop off boxes are invitations to massive fraud. Anyone can handle ballots in these situations. There are ZERO controls on the chain of custody with both. Allowing political operatives to go door-to-door collecting ballots is without a doubt the most idiotic idea ever proposed. Ballot drop off boxes are hardly secure locations if someone wants to tamper with an election.
Voting for weeks is another utterly stupid idea.
This allows someone who wants to commit massive fraud plenty of time to do it. When combined with mail-in balloting a person wanting to commit fraud has plenty of time, unseen, to do it.
Not purging and keeping voter rolls up to date. This one allows those who want to commit fraud--when combined with mail-in ballots and weeks long elections--an easy path to do so. The scam here is that persons register to vote in multiple states using a common address in each one where one of the conspirators lives. The ballots are mailed to that address and the person there then sends those ballots to the other participants. Filled out, the participants mail them back to the person in the state for that ballot who then mails them in to be counted.
This sort of scam has been done before. I remember one from the Bush Gore election that was running between Ohio and Arizona where about two dozen participants were voting in both states. While that one was small, and they did get caught and prosecuted, it shows this method has potential.
It is a variant of vote swapping.
https://www.votepact.org/
https://www.khou.com/article/news/politics/vote-swapping-apparently-its-a-thing/289-349503308
https://www.vocativ.com/372898/vote-swapping-app-aims-to-defeat-trump-in-swing-states/index.html
The Democrats know their only hope of winning elections down ballot in a very large portion of the country is to cheat. You are only looking at the presidential race. It's a tiny portion of the whole ballot. Democrats, like Republicans, are a minority party.
That aside, I just showed how elections would be potentially open to massive fraud under HR 1 and SR 1. Both bills undermine the credibility and faith people would have in the election process and no matter how much the MSM, Democrats, and other supporters of these claim to the contrary, won't change that. If a large portion of Americans have little or no faith in the election process, it becomes one that is no better than in some banana republic or autocratic dictatorship.