Tom Del Beccaro, former chair of the California Republican Party and a candidate for U.S. Senate in 2016, proposed a flat tax on Tuesday.

Del Beccaro is running for the seat to be vacated by retiring Sen. Barbara Boxer (D-CA).

Surprisingly, Del Beccaro is following the model of Gov. Jerry Brown, who ran for president in 1992 on a pledge to create a 13% tax across the board.

A statement from the Del Beccaro campaign explained his plan in further detail:

According to the Del Beccaro campaign, his state proposal includes:

Economist Stephen Moore, an adviser to Del Beccaro, said in a campaign release: “Tom’s flat tax proposal would jump start the economy by restoring economic incentives and lead to more jobs nationally and for California.”