Christie hit Rubio for missing the vote on the Hezbollah Sanctions Act he claims as an accomplishment.
Debate moderator said applause was too loud for candidates to hear their names being called.
Data provided by Google shows it as the top trending question for Bush.
Candidates are hoping to make a final impression just days before New Hampshire votes.
Kasich is considered to be running one of the more moderate campaigns in the GOP race.
Bush and Lindsey Graham said Rubio's position is extreme and makes him unelectable.
“Maybe I should never go home for another change of clothes,” Carson joked.
Pressed on the exclamation point on his campaign logo, Bush shooed the reporter away.
The clip refers to Disney-owned ABC as a "Mickey Mouse operation."
"All the rest of us will be there to welcome him with open arms," he said.