McDonald's will extend its $5 value meal into December in most U.S. markets as it looks to win back lower-income consumers.Franchisees have been voting on extending the value meal, and roughly 80% of local markets have opted to extend the deal into December. Votes on extensions are ongoing, so additional locations may be added in the weeks to come.The value meal offers a McDouble or McChicken sandwich, small fries, four-piece chicken nuggets and a small soft drink for $5.Owners will also be offering local p ...