A new survey by Democracy Corps and Greenberg Quinlan Rosner, the latest in our series of weekly trackers in the Republican-held Congressional battleground, shows Democratic candidates maintaining their strong position with just over a week left before Election Day, even in an extended battleground. Because of the Democrats’ strong position, for this survey we expanded the battleground to the 55 most endangered Republican-held districts, adding 5 more districts once considered safe for the incumbent party. They are clearly no longer safe; in the lowest tier of seats, Democrats are within striking distance, trailing by just 5 points. And despite some improvement by Republican incumbents, Democrats continue to hold a significant lead in the top tier of Republican districts while fighting to a draw in the second tier.