But this also is the most charitable way to interpret Rubio’s distant second-place finish. Not because these are outlandish assumptions—they aren’t. It’s just that even if everything goes according to plan, Rubio will have proved fairly little in South Carolina.

By inundating Rubio’s campaign with endorsements and money, Republican Party officials have effectively communicated that they’ll attempt to thwart the will of the majority of GOP primary voters who support Trump and Cruz. And yet, despite all of that juice—and as badly as Cruz underperformed—Rubio can’t count on Cruz fading rapidly. He definitely can’t seem to come within spitting distance of Trump anywhere. And on top of all that, he’s yet to endure a concerted Trump onslaught the way Cruz has, and Bush did—and both those candidates were harmed badly.

Though the South Carolina returns drove Bush from the race, it isn’t a foregone conclusion that his supporters will overwhelmingly defect to Rubio. One of the most critical lessons of Iowa and New Hampshire is that Trump draws his support from across the party, including its mainstream. Many Bush supporters will presumably also defect to Kasich, who essentially skipped South Carolina and is pinning his ever-dim hopes on Northern primaries in Michigan and his home state of Ohio in March. Ben Carson’s supporters will likewise scatter, rather than defect to a single candidate in unison (though Cruz stands to be the single largest beneficiary).