1/ He was kind of expelled. He ran and was elected as a antichoice Democrat, aligned w/ the party platform on most issues (his day job is in organized labor leadership), but extremely conservative on abortion. After Roe, there was a very intense debate on abortion in NE...

2/ (including a kind of nuclear filibuster attempt by Democrats), w/ McDonnell supporting GOP a complete ban. The County Dems effectively kicked him out, he joined the GOP.