There's a first time for everything. That's certainly held true in this campaign dominated by Donald Trump.
And Republicans opposed to Trump are beginning to abandon the idea that Marco Rubio (or anyone else) can win a majority of delegates before the first round of balloting at this summer's GOP convention in Cleveland, Ohio, where the party will officially pick its nominee.
"We could be headed to a situation where there will be tremendous focus on trying to have a brokered convention — or a deadlocked convention because there aren't any brokers," GOP strategist Stuart Stevens, who helped run Mitt Romney's 2012 campaign, told NPR during special broadcast coverage Saturday night after the South Carolina primary.
After Super Tuesday, and Trump's big wins, that's even more true.
"When you look at the math," Stevens said, "it is difficult to imagine a scenario short of a complete meltdown by Donald Trump, where one of these other two candidates [Rubio or Texas Sen. Ted Cruz] will have a majority of the delegates going into the convention at this point. It's possible, but it just starts to get in the real world very remote."