The process took approximately 30 hours of continuous uninterrupted work. The IFE made public the results as they were being received and tabulated from all 300 of the country's Electoral Councils, one per congressional district. The results were tabulated live; an early lead by López Obrador dwindled slowly until Calderón overtook him in the early hours of Thursday morning. Unlike the PREP, the Official Count tallied votes in a more organized manner. Information received from the District Councils was added to the running count in the order of the district number, as they arrived to the office. The Councils themselves examined the electoral packages in numerical order. Returns from several northern states which had heavily favored the PAN according to the PREP were in particular slow to arrive; the delay was at least partially attributable to double checking of the tally sheets. Under Mexican Law, any political party could ask for the double-check, and raise objections. The campaign coordinator for Calderón blamed the delay on dilatory tactics by the PRD representatives in those districts.