Updated July 31 at 6:50 a.m. ET
Months of opposition to President Nicolas Maduro's plan to strengthen his party's power has resulted in more fatal clashes on the day of the election.
Citing Venezuela's chief prosecutor's office, the Associated Press reports 10 people were killed in Sunday's unrest. The opposition claims 16 people have been killed.
"Seven police officers were wounded when an explosion went off as they drove past piles of trash that had been used to blockade a street in an opposition stronghold in eastern Caracas," the AP says.