Defeated presidential candidate Lopez Obrador has formed an alternative government.
Politicians from Lopez Obrador’s Democratic Revolution Party, the PRD, had fought with MPs from the ruling party for control of parts of the podium on Tuesday, then staked out their territory by camping out with blankets and pillows for three days, in a bid to block the ceremony.
‘A better Mexico’
Calderon used the televised ceremony to call on politicians from both sides to respect the constitutional process, saying: “I invite you to build a better, different Mexico, a winning Mexico.”
He also pledged to “be the president of all Mexicans, without distinction, without regard to a person’s political preferences”.
“I have received the presidential offices from President Vicente Fox, the start of the process of taking possession of the presidency,” Calderon said. “Later, I will appear before Congress to take the constitutional oath.”
Tensions have been high in Mexico since Lopez Obrador lost the July 2 election by less than one per cent. After the result was announced he claimed Calderon had won through fraud and led weeks of protests.