The pair was following the taggers for about two miles to try to get a license plate number after they had vandalized the councilman's liquor and meat store.
At an intersection just a block from the police station someone in the Nissan signaled to a man on the street who fired on the SUV and hit it in several places including the windshield, doors and steering wheel.
Conde's SUV was hit by at least seven bullets, and his brother was hit in the shoulder. He was not seriously wounded.
No one has been arrested in the shooting.
The Associated Press contributed to this story.