Senator Bernie Sanders easily won the Democratic primary in West Virginia, the first of a string of potentially strong showings this month that may drag out, but not block, front-runner Hillary Clinton's march towards the Democratic nomination.
Additionally, Republican Donald Trump won Republican primaries in West Virginia and Nebraska - virtually foregone conclusions given that he was the only Republican remaining in the race.
Heading into today, Clinton held a formidable lead in delegates, and because delegates will be awarded proportionally, Sanders's West Virginia victory was not expected to make much of a dent in that lead.
However, his enduring popularity, large rallies and insistence on staying in the race until the Democratic convention in July have highlighted some of Clinton's weaknesses and prevented her from fully turning her attention to the general-election contest against Trump.
"West Virginia is a working-class state, and like many other states in this country, including Oregon, working people are hurting," Sanders said at a rally in Salem, Oregon. "And what the people of West Virginia said tonight, and I believe the people of Oregon will say next week, is that we need an economy that works for all of us not just the 1 percent."