Having just watched a Supreme Court nominee supported by a comfortable majority of Americans draw just three Republican votes in the Senate, you could be forgiven for thinking bipartisanship in Congress is a thing of the past. And in the case of Supreme Court nominees, you’d be right: The last time a nominee got over half the votes of the opposition party was in 2005, and you have to go back nearly three decades — to Ruth Bader Ginsburg in 1993 — to find one who drew votes from almost all senators.

But if you look carefully, there are plenty of signs that bipartisanship is still possi...