At least 25 people were killed and 60 injured Saturday in a bomb blast at an open air rally in central Iraq.
Officials said the attacker struck as Sunni candidate Muthana al-Jourani was meeting supporters in Baquba, 60km (35 miles) north-east of Baghdad, the BBC reported.
No group has claimed responsibility for the deadly attack.
According to NDTV supporters of the Azimun Ala al-Bina party, a small local list, had been gathered at around lunchtime in the city of Baquba when a militant threw a grenade before a suicide bomber then blew himself up.
A police colonel and a medic at Baquba hospital said at least 25 people were killed and 60 others were wounded.
The country has been plagued by attacks in the lead up to the April 20 provincial elections and is braced for more violence.
The polls will be the latest in Iraq since a March 2010 parliamentary election, and the first since the withdrawal of US forces at the end of 2011.