Yes and yes. They use a couple of different drm schemes and you might need an adobe digital editions login for anything using the older one. The newer one doesn’t need anything special.
I'm neither an expert nor an american, but the idea that RFK Jr running as a third party candidate will hurt the democrats seems strange to me.
His policies, which can be summed up as "deny reality", align very closely with the modern republican party, not the democrats. It's hard to imagine that he would pull more votes away from Biden than Trump. Are there some people who would vote based on name recognition? Maybe... but surely it can't be that many? Meanwhile "Trump but not a rapist" must appeal to a number of the evangelical republicans...
First and foremost, no Republican would willingly vote for a Kennedy. The Kennedy family is right up the with the Clinton and Obama families as targets for conservative hatred.
Secondly, there’s a small but growing contingent of “crunchy” liberals who are rabidly anti-vax and increasingly jumping on the conspiracy train. They’re still in favor of lots of liberal things like reproductive and LGBTQIA+ rights, but they’re increasingly anti-establishment and pro-conspiracy.
Any third party candidates will pull voters away from both parties, but I suspect dipshit RFKjr will pull about 80/20% democrat vs republican.