After 20 years at the top, Speaker Pelosi says she will stand down as party leader.

The first woman to head the U.S. House, Speaker Nancy Pelosi, broke the "marble ceiling"

on Thursday by announcing her intention to leave the position.

"I have a lot of faith in our caucus, therefore I won't run for Democratic leadership in the upcoming Congress.

The time, in my opinion, has come for a new generation to lead the Democratic caucus, which I hold in the highest regard

"During an address on the House floor, Pelosi stated.

I'm thankful that so many people are prepared and eager to take on this enormous duty.

Pelosi said that she will keep serving as the House representative for her San Francisco district.

There were 12 women in the Democratic caucus when she first entered Congress in 1987; today, there are 90.

She added, "And we want more," to cheers.