Two weeks ahead of a likely tight election, Democrats' lead over Republicans in battleground districts has narrowed slightly, but there's at least one area where they've retained a decisive advantage. A new Washington Post-Schar School poll of likely voters in 69 battleground districts found that of the 10 percent who have an unfavorable view of both the Democratic Party and the Republican Party, about 6 in 10 prefer the Democratic candidates in their area.