There were various claims of the possibility of fraud concerning the PREP results, and also the official count that followed. Many people confused the two and were further thrown by several differences between them. For example, the PREP listed polling booth-by-polling booth, district-by-district, and state-by-state running totals in addition to a full running total by candidate. The report of the Official Count, on the other hand, only gave the full running totals by candidate, obtained by adding results as they were reported at the district council level. The order in which tallies were added was also different (see discussion elsewhere in this article). Finally, the behavior of the running tallies for the candidates was also very different: in the unofficial PREP count Calderón quickly overtook a very early lead by López Obrador and kept a diminishing lead until the end, while in the official count López Obrador led from the first report on, until Calderon overtook him near the end of the count.