In the 2007 senatorial elections, Aquino actively campaigned for the senatorial bid of her only son, Noynoy Aquino, who ran successfully. In December 2008, Corazon Aquino publicly expressed regret for her participation in the EDSA Revolution of 2001, which installed Arroyo into power. She apologized to former President Joseph Estrada for the role she played in his ouster in 2001. For this action, many politicians criticized Aquino. In June 2009, two months before her death, Aquino issued a public statement which strongly denounced and condemned the Arroyo administration's plan of amending the 1987 Constitution, calling such attempt as a "shameless abuse of power."