Extremely smart guy. Son of Indian immigrants, converted from Hinduism to a 180 proof form of Catholicism in high school. Went to Brown, accepted to both Yale Law School and Harvard Medical School, but went to Oxford for a Rhodes scholarship instead. Did a stint as a McKinsley consultant, then cleaned up the LA Medicaid system. Did some time in the federal bureaucracy, then ran (unsuccessfully) for LA governor, got elected to congress, then after a couple terms ran successfully for governor in the wake of Katrina, Blanco, and the usual highly colorful LA corruption stories.
He's written some stuff that some people find odd, such as articles about exorcism in a Catholic magazine. Social conservative, pro-gun rights, out to clean up LA"s political culture, which is one of the more corrupt in the US.
ETA: the castration is chemical castration, which is essentially pumping the violator full of hormones to eliminate sex drive.