“I’m a little confused, senator,” Comey said at one point.

McCain’s focus on Clinton was surprising given he’s one of the most outspoken Senate Republicans on the need for a full investigation into the Russia allegations — he’s called for the formation of a special select committee on the issue and said the scandal has reached the level of Watergate and Iran Contra in scope.

He was mocked on Twitter for sounding confused and incoherent.

In his statement, McCain admitted he “missed an opportunity” to ask about the central question of the hearing — whether President Trump improperly intervened in the FBI’s investigation into Russia’s interference in the election.

“I get the sense from Twitter that my line of questioning today went over people’s heads,” McCain said in a statement. “Maybe going forward I shouldn’t stay up late watching the Diamondbacks’ night games.”