LONDON (Reuters) – JPMorgan, which runs the most widely used emerging market bond indexes, is polling investors over the potential exclusion of Russia’s local and hard currency debt from its benchmarks. In a “Survey Monkey” poll seen by Reuters, the Wall Street bank asks investors to vote on their “expectations” over whether various sovereign and corporate hard-currency and rouble-denominated bonds and securities should be retained or removed. Those expecting the securities to be removed are asked about their preferred timing – at the end of March or the end of April. The poll requests answers…