His Twitter feud with Hillary revealed a core issue that should dominate Thursday's debate.
Rubio performed well in Iowa, but Ted Cruz’s victory heralds a seismic GOP primary.
Republicans have been demanding an anti-Obama for years—and tonight, they'll begin the process of nominating one.
By withdrawing from the debate, he demonstrated who's in command and who is not.
Prayer would be a safer bet than the strategies the party is actually employing.
And they can't seem to shake it.
The very existence of the Democratic debate over health care indicts the Republican Party's near-total indifference to the issue.
Bernie Sanders proved he'll be a tough competitor in Iowa and New Hampshire. Hillary Clinton showed she's up to the challenge.
Sanders has largely treated Hillary Clinton with deference. But that could change at tonight's debate.
The hope was that Rubio would rise and Cruz and Trump would stumble. That didn't happen.
Short of a Rubio miracle, party insiders will need to start thinking about which of two evils they fear less.
It's the public option, stupid!
The Republican base is old, cantankerous, and white. Senator Rubio is not.