[JURIST] Mexican President-elect Felipe Calderon [campaign website, in Spanish; BBC profile] was formally sworn in [transcript] as President of Mexico [official website] in a hasty ceremony before the Mexican Congress [official website, in Spanish] Friday after a midnight swearing in by outgoing President Vicente Fox [BBC profile] several hours earlier. Officials previously declared Calderon the winner of Mexico's July 2 presidential election [JURIST news archive] by a margin of 0.6 percent, sparking protest and allegations of fraud from opponents. Lawmakers still bitterly divided over the results of the presidential election tussled with one before the ceremony and continued to argue and heckle Friday as Calderon took the oath of office.

Losing leftist presidential candidate Andres Manuel Lopez Obrador [campaign website, in Spanish; BBC profile] held an alternative ceremony [JURIST report] Nov. 21 in which he swore himself in as president of the parallel government [JURIST report] he claims to have established for the country. The Federal Electoral Tribunal [official website, in Spanish] rejected [JURIST report] most of Obrador's electoral fraud allegations [JURIST report] in late July after finding no evidence of systematic fraud. AP has more.