In general in the US only White Evangelical Protestants and Black Protestants have less than a majority who believe assisted suicide / euthanasia should be available for "great pain and no hope of improvement", and those two groups still have over 40% who believe it should be available.

And that's as of 2015, so the trend may be higher by now. https://www.pewresearch.org/short-reads/2015/10/05/californi...