The absolutely true fact is that that statement had nothing, even so much as a hint of a dog whistle, to do with that you’re saying. Like not even a shred.
He was speaking to a populace that doesn’t typically vote. So he’s saying that they can just vote this one election, because it’s important for them to for their own good. Then, he’s saying “just this once” because, again, they typically don’t vote. And again - after that he says “I’ll fix it so good you won’t have to again” - this is in reference to him fixing the government so well that they won’t need to vote again since it will be so well-functioning.
By the way, this was my take originally, on first listen. It was reinforced further my listening to it again. It’s completely clearly the true take, and I think if you have trouble accepting that it’s because you’re disturbingly mislead by bias, probably not your own fault entirely, but undeniably so.