Nancy Pelosi, a Democrat, represents California's 12th congressional district in the US House of Representatives.
Step-by-step explanation:
Nancy Pelosi, a Democrat, represents California's 12th congressional district in the US House of Representatives.
California has a total of 53 representatives, and each representative represents a specific congressional district within the state.
Pelosi has served as the Representative for the 12th district since 1987 and has been the Speaker of the House since 2019.