Donald Trump wins GOP presidential primary in South Dakota

WASHINGTON -- Donald Trump has won the Republican presidential primary in South Dakota, scoring a second victory on the final night of the GOP primary season.

Trump claimed a win in New Jersey earlier, walking away with all 51 delegates in the Garden State.

In a speech from his Westchester, N.Y. golf course Tuesday, Trump said he understands he bears "the responsibility of carrying the mantle and I will never ever let you down."

Trump is the only remaining candidate in the race for the Republican nomination.