CHISINAU: Moldovans vote on Sunday in a presidential election and a referendum on joining the European Union, with fears of Russian meddling in the two key electoral tests amid the war in neighboring Ukraine. The elections are a litmus test of the former Soviet republic’s pro-European turn under incumbent President Maia Sandu, who is seeking a second term in the country of 2.6 million. Police have made hundreds of arrests after discovering a massive vote-buying scheme, warning this week that up to a quarter of the ballots cast could be tainted by Russian cash.