David Agren on Zavaleta

Some more reporting on the departing former deputy:

"At this time and since the July 5 election, I don't share the way of doing politics in the PRD," Zavaleta said in her letter.

Zavaleta didn't mention López Obrador by name in her letter, but one long-time enemy of the self-declared "legitimate president," former PRD director of political formation, Fernando Belaunzarán, told the newspaper La Razón that she had tired of the "Stalinist intolerance against her," and, "she was attacked in a hypocritical way."

La Razón columnist Adrián Rueda, meanwhile, suggested on Friday that Zavaleta was disappointed that PRD president Jesús Ortega refused to endorse her aspirations for the 2011 gubernatorial race in her birth state of Guerrero - a move that "accelerated" her resignation.

The decision surprised many, but mostly due to the timing of Zavaleta's departure. The PRD holds a "refoundation" forum Dec. 3 - Dec. 6 that has been organized in response to the party's scandalous 2008 leadership race - that Ortega won by barely 16,000 votes and was settled by the federal electoral tribunal - and could result in disaffected factions and members heading for the exits.

Zavaleta expressed pessimism that the forum would produce results.

"I'm not willing to participate in the supposed discussion on the refounding of the PRD because I don't believe that discussion will be had," she said in her letter.