They built their careers fighting Trump. Now they could face him on the Democratic ticket.
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![They built their careers fighting Trump. Now they could face him on the Democratic ticket.](https://media-cldnry.s-nbcnews.com/image/upload/t_fit_1500w/rockcms/2024-08/240802-veeps-kelly-waltz-aa-1107a-20b34b.jpg)
The top contenders to be Kamala Harris’ running mate got to this point, in part, by battling Donald Trump.