Very concerned. Sadly I think he's going to win it for reasons I.... I just can't imagine for anyone other that red-hat nutcases, who are not a majority of the Republican vote. But actually the problem may be less him being President than it ending up being Vance.
I've tried to avoid going down the 'Oh, he's losing it, he's going senile' path but actually I think there really is something wrong with him neurologically now. He's making less and less sense, swearing a lot more at rallies like he's lost inhibitions about where to use that language etc.
Notice how they've kept him in front of the MAGA crowd, who would vote for him if he spent a rally farting into a microphone for an hour, but kept him away from mainstream media interface since his 'She's giving transgender operations to illegal immigrants in prison' performance in the debate.
If he is sworn in, I don't give it very long before he has to be replaced and the most hardline (and more competent) of misogynists, homophobes, racists, antisemites and general extreme Christian Nationalists will take charge.
It's bad news for Europe as well - Putin will be emboldened, roll over Ukraine and an Eastern EU country could well be next. Including my mum's home country. Plus it will encourage a hard-right here because for some reason people won't look at America and go 'Geez, let's not be like that' partly because our own government is totally gutless in actually standing up for social justice and hoping they'll fight the far right by being a slightly less obviously evil version.