To defeat Bernie, they'll basically need to run Kamala/Biden and coopt progressive by fronting Kamala as oppression olympics medalist and Biden as "moderate Obama guy" . Otherwise they split center-neoliberal(Warren/Biden) vs progressive votes - going to Bernie and various feminist harpies. Bernie has to outmaneuver the Opression Olympics circus, its his weak point(regardless of his past). From the outside, the battle of senile boomers to virtue signal the hardest will be entertaining.