Washington (CNN) A letter that's being circulated on Capitol Hill reveals multiple incoming freshmen -- who were largely noncommittal on the House speaker race during their campaigns --- will in fact support Nancy Pelosi.

The letter, obtained by CNN, is still being circulated and so far includes 61 signatures from women incumbents and members-elect. It comes as Pelosi is shoring up support from the progressive base this week with endorsements from large and powerful groups, as well as prominent progressives in Congress — a move that will put pressure on wayward Democrats to back her bid.

Rep. Pramila Jayapal, a co-chair of the progressive caucus along with Rep. Mark Pocan, earlier this week would not say whom she's supporting, but she is listed on the women's letter in support of Pelosi.

Also on the letter are members-elect like Angie Craig of Minnesota, Ilhan Omar of Minnesota, Dr. Kim Schrier of Washington state, Lori Trahan of Massachusetts, and Jennifer Wexton of Virginia.

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