Voters in Iraq are casting their ballots in Parliamentary elections. But as polling stations opened around twenty explosions were heard in Baghdad. At least 24 people have been killed. At least two buildings have been destroyed and dozens of mortars fired across Baghdad and elsewhere.In Baghdad, security forces have lifted a ban on cars using the streets despite constant bomb attacks. This is the second parliamentary election since the 2003 invasion. Iraq Prime Minister Nouri Maliki told newsmen that the violence should not deter the voters from turning out. Earlier, he called on voters to turn out in large numbers, saying that participation would boost democracy. Voters will choose from more than 6,000 candidates vying for seats in the 325-member assembly.