It's not enough to just elect Democrats. Ok technically Democrats would have 67 votes in the Senate if they flipped every single Republican seat, which would be just enough to convict. But that's not happening.
Instead, there needs to be a movement by anti Trump forces from across the spectrum to primary Republicans and replace them with anti Trump candidates. That effort needs to start now.
Ackman is also a part owner of X, and that platform will also definitely be a big part of an effort to defeat Mamdani.
Edit: a family member just asked me what I think of Mamdani wanting to put a tax on all hiring, saying he proposed a 35% tax on the salary of all new hires. I googled this, and the only results are on X. The fix is in.