Hey lawgrad,
I have the same scientific (and personal) interest in ideology. Some of the names I've been gathering in the last years: John Jost (NYU), Jim Sidanius (Harvard), Jaime Napier (Yale), Brian Nosek (UVA), Jon Haidt (NYU-Stern), Jesse Graham (USC), Pete Ditto (UC Irvine), Chris Federico (UMN), Matt Motyl (UIC), Phil Tetlock, (UPenn), Linda Skitka (UIC). From this Fall I'll be working with Ditto at Irvine.
In terms of programs, you have to be very open minded, because most of these professors work at social/personality departments, but there are a lot of political psychologists that are affiliated in political science, law departments, or even business departments (i.e. Haidt, Tetlock).
If you need further references, feel free to send me a message.
Good luck!!