Donna Moss

Donnatella Moss is a fictional character played by Janel Moloney on the television serial drama The West Wing. During most of the series, Donna works for White House Deputy Chief of Staff Josh Lyman as a senior assistant, until she quits her job to work for the presidential campaign of Bob Russell in season 6. Although all the senior staffs' assistants are continuing characters with personal backgrounds, Donna is the best defined and most often featured staff member on the assistant level, and her difficult, semi-romantic relationship with Josh is a recurring plotline throughout the show. She later works for Bob Russell's campaign for President as a spokeswoman, taking the same job for Matt Santos's campaign after Russell loses the primary.