Manchin's voters love him...they don't seem to be bothered by remaining one of the poorest states in the country, with low literacy, abysmal health care, and few decent prospects outside coal jobs. Manchin is the only Democrat who will ever win in WV. Sinema's poll numbers are terrible, but she has the backing of big pharma, and corporate donors, she can point to the infrastructure bill she helped negotiate, and she may well get the support of moderate Republicans voters who view her as a check on 'socialism'. She knows exactly what she's doing. I don't think Manchin or Sinema care about being in the minority, but both should care that their electoral 'wins' could be overturned by WV/AZ voter nullification laws. And again, as long as Biden refuses to endorse a carve-out for democracy hardening legislation, he provides ample cover for Manchin, Sinema, Hasan, and other moderates who refuse to budge on the filibuster.