AP says his lead is "insurmountable":
Ruling party candidate Felipe Calderon built an insurmountable lead in Mexico's presidential vote count Thursday, but his leftist rival vowed to challenge the results in court.
With 99.92 percent of the vote counted, Felipe Calderon would win even if all the remaining votes went to Andres Manuel Lopez Obrador of the Democratic Revolution Party. He had 35.87 percent of the vote, compared with 35.32 percent for Lopez Obrador. Roughly 220,000 votes separated them.
