USA States have tightened up Election Rules

https://www.brennancenter.org/our-work/research-reports/how-voting-laws-have-changed-battleground-states-2020

In nine battleground states in this year’s Presidential elections, voting rules will look considerably different than they did four years ago. In the years since the 2020 election, many states have aggressively attempted to restrict voting access. Limiting absentee voting has been the most prevalent tactic, while several of these states have also enacted laws that permit partisan interference in elections or threaten the people and processes that make elections work.

Across the country, the number of new expansive laws enacted continues to outpace new restrictive ones. In the swing states that played a pivotal role in the last presidential election — Arizona, Florida, Georgia, Michigan, Nevada, North Carolina, Pennsylvania, Texas, and Wisconsin — legislatures have been especially active in changing the laws that govern voting and elections.

Due to court orders and delayed implementation dates, not all these new laws will be in effect by November, but the vast majority will.

The Brennan Center is a liberal progressive organisation, so when they stated above "enacted laws that permit partisan interference in elections or threaten the people and processes that make elections work"  what they are referring to is the Laws that were passed to stop those counting the votes from closing their doors and barring the Observers of any Party from seeing what they are doing.  Likewise, the new Laws mean more control over who and how many Party observers can be present in the tally rooms, and also that votes cannot be counted without observers present. 

IMO most of the changes will greatly help Trump wipe the floor with Harris. Speaking of which - I was just told that the first CNN and MSNBC headline after Trump wins the election in November will probably be something like:  "Trump smashed yet another woman and viciously ended her career."