Iowa
In sharp contrast to his failed rival, Rubio avoids the extravagant.
Liz Mair was fired over tweets earlier this year, but she took to Twitter Monday to explain why Walker couldn't win the White House in 2016.
"I think our president should stand up against things like Islamophobia, not support it."
But at least there were sides.
WHAT'S HAPPENING
He also took aim at some GOP presidential hopefuls, albeit indirectly.
Iowa and New Hampshire like him, but many voters elsewhere don't know him.
Democrats are feeling the Bern.
Tyler and his dog, Hugo, run cross-country together.
The famed neurosurgeon's low-key approach has paid off, but will it hold up under scrutiny?
Sanders is 9 points ahead of Clinton in New Hampshire and trails by 11 points in Iowa.