There is a lot of shenanigans with this election, the issue is the Republican state legislature could have killed so many of these loop holes legally months before the election, but didnt want to be seen as endangering their constitutes making them vote in person during a pandemic. They would have received death threats, so would their family and maybe even been voted out.
Trump had a legal case in PA, he absolutely did. His lawyers focused on fraud in Philly which everyone knows happens every year and statistically speaking this year was not much different than previous years. The new fraud was in the surrounding counties (statistically speaking). However, he had a legal case on the date of mail in ballots. That should have been 100% the legal effort and it should have started before the election. He did a piss poor job of managing that.
GA to me seems like legally Stacy Abrams pulled a fast one and was able to legally harvest ballots. Even if the suitcases appeared you have to prove they were illegally harvested. GA has republicans that could have addressed this legally and stopped it. They didn't and the blame should be placed squarely on them.
WI there is probably a legal case to be made as well but given Wisonsin allows same day voter registration, good luck running that to ground. There is probably a legal case to be made.
MI there is fraud I doubt enough to over the results, republicans again can clean this up legally through state legislation. I dont see a legal path in Michigan. Blame the state legislature here.
Arizona there is a legal path around cured ballots as the sample size the judge allowed showed there were errors and a full audit should be done. Probably not enough time. But I do think Trump won.
Nevada - the amount of votes for democrats defy the statistics. Legally speaking they could target the computer signature verification which is outside of the law. Legal action could have started sooner. The Non-Resident voting is a legal gray area based on how Nevada defines a resident (not enough time in my opinion to run to ground). I truly believe based on data Trump won this state legally.
In summary, Republican legislature didn't stop this sooner, we are reaping what we sow. Trump focused on the TV aspects of dead voters, multiple voters, double ballots that is red meat to the base but legally is about as stupid a route to go as it takes a ton of evidence and it is looking at every single vote in a small amount of time. The legal battle was made for TV and not the court room.
Legally, through a lot of fuckery, Biden won. Republicans need to learn, clean it up at the state level, and keep on with Trumps policies with a better messager. Nikki Haley or Kristi Noem will slaughter Kamala in 4 years, but republicans at the state level need to take action now!