Kansas, Kentucky, Louisiana, and Maine all held nominating contests Saturday. Ted Cruz handily won the Kansas and Maine caucuses. Donald Trump beat out Cruz for narrow wins in the Louisiana primary and the Kentucky caucuses. In all of those contests, Rubio was a distant third — except in Maine, where he came in a distant fourth, behind John Kasich. In Louisiana and Maine, Rubio finished so far behind that he failed to meet the threshold necessary to receive any delegates at all.

To be sure, these four states were not expected to be Rubio strongholds. But he fell short even in areas where he ought to have done well. Kansas Republicans, for instance, expected that Rubio would win in Johnson County, the area around Kansas City. Instead, Cruz bested him there nearly two to one — 42 percent to 22 percent. Maine Republicans predicted that Rubio would finish behind Trump and Cruz in the state, but they expected him to perform more strongly in the Portland area. Instead, he finished in fourth place in the Portland-area caucus, trailing Cruz, Trump, and Kasich.

It’s the third night this week that headlines have proclaimed a disappointing night for Rubio. On Super Tuesday, he fell to Trump and Cruz in all but one state: Minnesota. On Thursday, he had a disappointing debate performance: Hoarse and fighting the flu, he climbed down into the mud pit to fight with Trump, and did not always emerge the victor. He earned criticism for contributing to the mayhem and was outshone by both Cruz and Kasich, who came off, by comparison, as the adults on the stage.

Saturday’s results showed clear evidence of a precipitous slide for Rubio in the wake of the debate: Per FiveThirtyEight, Rubio took 20.1 percent of the early vote in Louisiana. On primary day, he won just 9.4 percent of the vote.