Hillary Clinton Rides the Subway in New York City

Her MetroCard didn't work.

She then made her way to Munch Time, a diner in the Bronx.

Clinton's Metrocard didn't work at first when she tried to enter through the turnstile. But after swiping it a few times, she eventually got through.

As Clinton took the train uptown, the former New York senator told reporters she last rode the subway 18 months or 2 years ago.

Before the ride, Clinton also responded to Sanders’ remarks Wednesday night that she is not qualified to be president of the United States.

Clinton and Sanders both plan to campaign vigorously in New York -- a state with ties to both of them -- ahead of the primary on April 19.