Another candidate has thrown their hat into the ring to be the next Democratic nominee for president.

New York Sen.

Kirsten Gillibrand  announced Tuesday  on the “Late Show With Stephen Colbert” that she was forming an exploratory committee to run for president in 2020.

In her announcement, Sen.

Gillibrand said she's running because, "As a young mom I am going to fight for other people’s kids as hard as I would fight for my own." She added that she believes "health care should be a right and not a privilege," and also advocated for better public schools.

Sen.

Gillibrand has been a critic of President Donald Trump, going so far as saying the  president should resign  in the face of several sexual misconduct allegations back in 2017.

Also in that year, she called for former  Sen.

Al Franken to resign  amid sexual misconduct allegations.

Sen.

Gillibrand joins the ever-growing field of presidential hopefuls, including  Massachusetts Sen.

Elizabeth Warren ,  former HUD Secretary Julian Castro  and  Hawaii Rep.

Tulsi Gabbard .

Additional reporting from  Newsy affiliate CNN .