U.S. Sen. Kirsten Gillibrand, D-N.Y., speaks May 7, 2018, at the Adirondack North Country Association office in Saranac Lake. (Enterprise photo — Peter Crowley)

NEW YORK (AP) — Sen. Kirsten Gillibrand entered the growing field of 2020 Democratic presidential contenders Tuesday, telling television host Stephen Colbert that she’s launching an exploratory committee.

“It’s an important first step, and it’s one I am taking because I am going to run,” the New York senator said on “The Late Show with Stephen Colbert.” She listed a series of issues she’d tackle as president, including better health care for families, stronger public schools and more accessible job training.

Gillibrand, 52, has already made plans to campaign in Iowa over the weekend, more than a year before the leadoff caucus state votes.

She joins what is expected to be a crowded primary field for the Democratic nomination that could feature more than a dozen candidates. Already, Massachusetts Sen. Elizabeth Warren has announced her own exploratory efforts, and decisions by a number of other senators are expected in the coming weeks.