San Francisco, Mar 23 (IANS): Kamala Harris, first Indian-American to serve in the US Senate, remains unknown to many residents of her own state California despite maintaining a high profile in Washington, according to a new poll.

Forty-six per cent of Californians approve of the job Harris is doing, while 23 per cent disapprove, according to a poll released late Wednesday by the Public Policy Institute of California.

But 30 per cent of Californians -- including 20 per cent of Democrats -- said that they do not know how to rate Harris' performance, according to the poll, which is the institute's first post-election measure of her job approval, Politico news reported.

The poll comes after Harris rose onto the national stage, drawing attention as one of many potential Democratic candidates for President in 2020.

The former California Attorney General is among Democrats expected to attend a gathering of the party's most prominent politicians at a Centre for American Progress conference in May.

Last month, Harris was nominated to serve on four influential Congressional committees -- the Homeland Security and Governmental Affairs Committee; the Select Committee on Intelligence; the Committee on Environment and Public Works; and the Committee on the Budget.

The poll, using live telephone interviews, was conducted between March 5 to 14, surveying 1,706 California adults.