Suicide bombers attack a building close to the home of Ashraf Ghani, a leading candidate in Afghanistan's presidential elections.<br/> <br />The focus of the attack was the provincial election head quarters.<br/> <br />But Ghani's house was also hit and a gun battle raged with insurgents as security guards tried to protect his home.<br/> <br />(SOUNDBITE) (Dari) ZOHRA NAWABI, PROVINCIAL COUNCIL CANDIDATE; SAYING:<br/> <br />"The purpose of this attack is to disrupt the upcoming election process, as we are all hearing the gunfire I urge the people of Afghanistan to recognize the enemies. We should not keep silent; we should all stand against the brutal act of our enemies."<br/> <br />Gun fire could still be heard an hour later in the area, which was cordoned off by police.<br/> <br />Ghani, a former World Bank official was not at home at the time.<br/> <br />The attack is the latest in the run-up to the 5 April election to choose a successor to Hamid Karzai.<br/> <br />The Taliban, which has claimed responsibility, is boycott