Rome Mayor Virginia Raggi casts her ballot for a referendum on constitutional reforms yesterday in Rome. Italians began voting yesterday in a constitutional referendum, on which reformist Prime Minister Matteo Renzi has staked his future. Financial markets and Europe’s politicians fear victory for the opposition “No” camp could trigger political instability and renewed turmoil for Italy’s battered banks, pushing the euro zone towards a fresh crisis. (Story on P5)SD-Agencies