House Republican Leader Rep. Kevin McCarthy, R-Calif., is predicting the GOP will retake Congress in the midterm elections and he’ll be the next speaker. Just hours before polls open, McCarthy vowed Republicans will win “at least enough to win the majority,” and said “anywhere over 20 (seats) is a red wave.” He refused to be drawn into the possibility that he could wind up in a messy battle with fellow Republicans for the speaker’s gavel, including potentially members of the right-wing Freedom Caucus and strident backers of former President Donald Trump. “I’ll believe (I’ll) have the votes for…