From Washington to Wisconsin and Connecticut, Republican challengers are forcing analysts to revise upward their midterm forecasts of potential Democratic losses, putting the GOP in sight of a long-shot 10-seat gain.
In 2008, then-candidate Barack Obama's political coattails extended across the country. But heading into this year's elections, Democrats face a tricky task of where to deploy their party chief on the campaign trail as they try to hang onto majorities in both houses of Congress.
