Suicide bombers attacked several polling stations and security forces in Iraq on Monday killing at least 18 people and wounding dozens, police said, days before the violence-wracked country holds legislative elections. The polls are the country's first since the departure of US troops in late 2011, and they see Prime Minister Nuri al-Maliki seeking a third term. In west Baghdad, an attacker wearing a suicide belt targeted a polling station early Monday as security force personnel queued to vote, killing seven people and wounding 15, a police colonel said. All of those killed were police ******rs, a medical official said.