When the polls open in San Diego on Tuesday, the only way funding is going to be approved for the Chargers proposed new stadium is if the team gets the Election Day equivalent of a Hail Mary. If the Chargers stadium initiative (Ballot Measure C) is going to pass, two-thirds — or 66.6 percent — of voters in San Diego need to approve it, and right now, it doesn’t look like that’s going to happen. A recent poll conductedby the San Diego Union-Tribune shows that only 45 percent of voters are currently in favor of passing the ballot measure.