Pelosi helped a Kennedy lose in Massachusetts for the first time ever. LMAO https://t.co/mbbQs9R9gG— Krystal Ball (@krystalball) September 2, 2020
I think that she is right.
Kennedy's numbers were falling before the Pelosi endorsement, but he went into free-fall after the Pelosi endorsement, and he ended falling more than 25% from his earlier polls.
Pelosi is increasingly toxic among the party rank and file, and now she has tied her star to the only losing Kennedy campaign in Massachusetts ever.