Montana told him it was too late.
In Louisiana, the candidate doesn't get to decide. He isn't technically on the ballot anyway - Electors are. They are the candidates. So if they don't want to withdraw, they stay on.
That's what happened.
And that was also a different scenario - he was put on the ballot as a party nominee. (local parties)
What is being talked about here is putting him on as a write-in. The rules are different for that case.
Maybe in Montana, they don't need his permission. But those links show in a majority of states, they do.
Also, Montana and Louisiana both put Paul's Electors on the ballot within the deadline. The deadline has now passed for both states.
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