Other factors hastened the decline in Musharraf's popularity: a shortage of essential food items, power cuts and high inflation.
In February 2008, Musharraf's party admitted defeat in parliamentary elections and he was succeeded by Asif Zardari, Bhutto's widower.
The leaders of Pakistan's two main opposition parties formed a coalition and vowed to restore deposed judges.
Six months later, the coalition moved to impeach Musharraf, who then resigned as president and went into self-imposed exile, though he said the allegations of misconduct were false.
In August 2009, Pakistan's supreme court found that Musharraf had violated the constitution in 2007 when he imposed a national state of emergency. Government officials said that if he returned, he'd be arrested.
In May 2010 Musharraf announced that he planned to re-enter Pakistan politics and launched a new political party in October of that year.
But a Pakistani court then issued an arrest warrant for him in connection with Bhutto's assassination. He has said that the accusations are baseless.
He has described his support as scattered, and said he needs to rebuild it.
"This is a do-or-die moment for me and my party. I need to muster all the support I can," he said.