At least three people in regions across Russia carried out arson attacks at polling places on Friday as the first day of voting in the March 15-17 presidential election got underway. In Moscow, an elderly woman wasdetained for setting fire to a voting booth, according to the independent news outlet Sota. A video published on social mediashowed police officers detaining the woman as she appeared to film the blaze on her phone. Moscow’s Central Investigative Committee later said it had launched a criminal investigation into the arson. Election officialstold the state-run news agency RIA Novosti …