The former Atlanta mayor will face either Lt. Gov. Burt Jones or billionaire Rick Jackson in the race for the governor’s mansion.
Given there is no Republican in the race, Rabb is all but guaranteed to be elected in November to succeed retiring Democratic Rep. Dwight Evans.
Election analysts with the Cook Political Report rated both races in November as toss-ups.
The U.S. Justice Department has sued several states over the records, which it says it needs to make sure states are complying with federal election law.

The new rule will be effective beginning July 4. ‘The Trump SBA is unleashing historic new capital,’ said SBA chief Kelly Loeffler.
A top state official said concerns over vote-aggregation inside a ’secret bunker' were mischaracterized; critics say the ruling is a win for transparency.
Gallrein, a former Navy SEAL, was bolstered by record spending in the Kentucky U.S. House GOP contest.
Paxton is suing the Texas American Muslim University in Dallas, alleging the school was not authorized to offer degrees.
The project will produce clay needed for cat litter and industrial uses for 20 years.

The election marks the first open primary for the seat being vacated by retiring Sen. Mitch McConnell (R-Ky.) since 1972.
A five-person committee will hand out funds from a nearly $1.8 billion settlement to Americans claiming to be victims of weaponization of government agencies.
Lawmakers approved the package in an en bloc vote under Senate rules to accelerate confirmation of lower-level executive branch nominees.
The judge said ICE agents are only allowed to make arrests at immigration courts when there are ‘serious threats of physical harm to public safety.’
Foreign investors will likely be scared off after Beijing blocked Meta’s $2 billion acquisition of an AI startup based in Singapore, analysts say.
The Long Island Rail Road is expected to resume service Tuesday, May 19, at noon.
The federal government argued a federal appeals court correctly dismissed the case but said the Supreme Court should accept it because appeals courts disagree.
The Maryland Board of Elections announced on May 15 that some voters got the wrong party’s ballot for the primary.
The notice of voluntary dismissal was filed amid ongoing talks to settle the case to avoid protracted litigation.
The market for second-life batteries is booming, but experts warn that safety rules have yet to catch up.
‘There won’t be anything left,’ the president warned in a social media post on Sunday.
Letlow and Fleming face a runoff election on June 27.