Technically, she got more votes (edit due to being unclear: than Trump, in 2016). And not by a little, nearly 3 million people more voted for her over orange anti-republic anti-democracy man. But the voting system is unrepresentative, so it didn’t matter.

https://elan.school/

Yes, it does, if they have full access to the disassembled hardware and assuming research time & resources they could do practically anything. Such as emulating the Secure Enclave chip with a “fraudulent” version, changing all firmware running on any semiconductors in the phone, isolating storage, I don’t know the details, but let your imagination loose.

Physical, uninterrupted access is unlikely, yet bad news for anyone’s threat model.