The man who helped propel Rep. Alexandria Ocasio-Cortez (D-NY) to victory during her first congressional race is mounting his own campaign to oust one of the most powerful Democratic elders in the country.

Saikat Chakrabarti said he would initiate a bid to challenge former Speaker Nancy Pelosi (D-Calif.) in the party primary for the seat she's held for more than two decades, citing concerns with new government regulations.