David Hogg rose to prominence as an anti-gun campaigner and survivor of the 2018 mass shooting at his high school in Parkland, Florida. Now he's a vice chair on the Democratic National Committee, and making waves with his plan to push primary challenges to the party's incumbents in Congress.

Hogg criticized Democratic National Committee chair Ken Martin for proposing a rule change about election neutrality.

David Hogg, a top Democratic party official, isn’t backing off his controversial plan to fund primary challenges against Democratic members of Congress he deems “ineffective” in reaching disaffected voters,