By Iulian Ernst in Bucharest Pro-Russian interference is intensifying ahead of two critical votes on October 20. The presidential election, in which pro-EU President Maia Sandu is currently leading according to polls, and a constitutional referendum on EU membership, initially designed to boost Sandu’s candidacy, are both increasingly vulnerable to Russian influence. The Moldovan president’s national security adviser, Stanislav Secrieru, estimated for Politico that Russia will spend some €100mn to interfere with the presidential elections and the pro-EU constitutional referendum in Moldova. Co…