There have been two minor but noteworthy developments in the Democratic primary battle for Mary Margaret Whipple’s state Senate seat.

Liz Chadderdon, a consultant who had been working with Barbara Favola’s campaign, has left the campaign. Political chatter suggests she may have quit.

“You have to find the right fit sometimes,” Favola told ARLnow.com last night, without specifically addressing the circumstances surrounding Chadderdon’s departure. “It’s probably good we figured this out sooner rather than later.”

Chadderdon did not return a call for comment.

Meanwhile, Englin Consulting — run by Shayna Englin and husband Del. David Englin — has been hired to assist Army Lt. Col. Jaime Areizaga-Soto in his soon-to-be-announced run for Whipple’s seat.

“We’re psyched to work with Jaime,” Shayna Englin told the Blue Virginia blog. “He’s a tremendous candidate who’s in it to win.”

Technology consultant Ben Tribbett, a potential third Democratic candidate for the race, chimed in with praise for Areizaga-Soto’s hire.

“I think Englin Consulting is one of the best groups of Democratic consultants in the state,” he said. “I can’t think of anybody better to help guide Jaime.”