Has Hillary Clinton’s standing with the public declined sharply in recent weeks? Evidence that it has comes from Quinnipiac polls in three key swings states: Colorado, Iowa and Virginia. In each state, Clinton is matched against three relatively well-known Republican candidates: Jeb Bush, Scott Walker and Marco Rubio. In each state she trails all three. No candidate in any of these nine pairings reaches 50 percent. Bush comes in slightly lower, at 41 and 42 percent, than Walker (43-47 percent) and Rubio (43-46 percent).

But the real story is the sag in Clinton’s numbers. Quinnipiac finds that her favorability rating is just 35 percent in Colorado, 33 percent in Iowa and 41 percent in Virginia. In previous Quinnipiac and other polls in Iowa and Colorado, Clinton was running above 40 percent against these Republicans; in this Quinnipiac poll she is running significantly under 40 percent — a sharp and significant drop.