That's cool she's leaving but does it change anything? Meet the new boss senator Same as the old boss senator
She is leaving because she is tired of being berated at town halls for her bosses big, beautiful bill that she voted for.
Pretty weak of her to go against her own convictions, cave to pressure from Trump, vote to confirm Hegseth, and still give up her seat.
She's leaving because she killed her own career with the "we're all going to die" and video followup gaffes. The recent Iowa state Senate seat won by the Democrats was also writing on the wall.