We congratulate Mayor-elect Mamdani on his win and wish him well in office. But because Mamdani is a national figure drawing enormous attention, Democrats in districts and states not awash in blue will be forced to answer for him, and many commentators are concluding that his win can serve as a model for how Democrats should run in competitive races. We urge Democrats at all levels to resist the pressure to align with Mamdani’s politics and agenda, and we offer ten key points to make to interest groups, donors, and activists about why doing so will fail in tough races.