Tomlinson raised about $520,000 the first three months of her campaign, when she was the only Democrat in the race. That fundraising performance did little to scare off rivals.
She finished the latest fundraising quarter, which stretched from July to September, by raising about $380,000 and reported less than $300,000 in her bank account.
That lagged behind two other Democratic rivals: Jon Ossoff had about $1.3 million in his coffers and Sarah Riggs Amico reported about $425,000 on hand, thanks mostly to a loan.
Walker, who records show drew a salary of roughly $10,000 a month, is a former Democratic National Committee staffer and Washington consultant who built a reputation in Georgia by helping Abrams shatter fundraising records last year.
In her tweets, she praised Kendra Cotton, Tomlinson’s campaign manager, and other senior staffers she described as “very good, deeply kind, funny, hardworking people.”
Walker added that she didn’t announce her termination right away because she didn’t want to “rock the boat.” But she said she’s “tired of tiptoeing around candidates who know how to lead but not necessarily how to listen.”
Walker was replaced by Steve Leeds, a veteran finance guru who worked on the campaigns of both U.S. Sen. Max Cleland and Michelle Nunn, the 2014 Democratic nominee.
A pro-Perdue PAC has criticized Leeds' former role as senior counsel to the General Services Administration. He was fired after the fallout of a report about lavish spending at a Las Vegas conference in 2012.