“From a linguistic point of view, ... Rubio began debating on an eighth-grade level, but dropped at the ninth debate, on Feb. 13, the first time he went on the attack against Trump.

W/ crowd of 500 @RealBenCarson just called out to 5th grade class: who's dumbest kid in class? At least half dozen kids point to 1 student. — Timothy Meinch (@timeinch) January 7, 2016 ...