ABC News -- ABC News Rick Klein reports: Three major races on the ballot tomorrow mark the first high-profile elections of the Obama era. Getting beyond the traditional caveats -- these are three discrete races that are more likely to turn on local issues and candidates than they are to elucidate key national trends -- Election Day 2009 brings critical lessons about the state of the electorate, as well as the resiliency of the coalition that vaulted President Obama to the White House. My colleague David Chalian has a full curtain-raiser HERE . ABCs Polling Director Gary Langer sorts through the numbers HERE . And I handicap the races with ABCs Charlie Gibson on the World News Webcast HERE . Some of what to watch for on Election Day 2009: New York-23:...