Al Franken

[Demit]

148. "Gillibrand was the first woman in the Senate to call on Franken to quit,

writing in a lengthy Facebook post that "enough is enough" when it came to her Minnesota colleague. "While Senator Franken is entitled to have the Ethics Committee conclude its review, I believe it would be better for our country if he sent a clear message that any kind of mistreatment of women in our society isn't acceptable by stepping aside to let someone else serve," she wrote.

Her note was quickly followed by tweets from McCaskill — who posted "Al Franken should resign" — and Hassan, who wrote, "It is clear that Al Franken has engaged in a pattern of egregious and unacceptable behavior toward women."

Within moments, Harris had tweeted, "Sexual harassment and misconduct should not be allowed by anyone and should not occur anywhere" and that "the best thing for Senator Franken to do is step down," while Hirono referred to the choice by Time magazine to name "The Silence Breakers" of the #MeToo movement as its 2017 Person of the Year on Wednesday in calling on Franken to quit.

— https://www.nbcnews.com/politics/politics-news/democratic-women-senators-call-franken-resign-amid-sexual-misconduct-allegations-n827036

In any activity involving six people, there is usually, and logically, one person who coordinates the actions of the group. Gillibrand was obviously the coordinator.