Public voting has begun in the city’s Deck the Windows of Boston Main Streets contest, a friendly competition that asks merchants to decorate their storefronts for the holidays. Residents are encouraged to vote online for their favorite holiday-themed windows. Last week, local judges reviewed windows in each of the Boston Main Streets districts and submitted a winner from each of the 20 Main Street districts. The public voting stage of the contest will conclude on Dec. 18. The local finalists include: Ashley’s Breakfast Shop in Bowdoin/Geneva; A Sweet Place in Fields Corner; Reggae on the Grill in Four Corners; Innovative Fashions & Bridal in Mattapan Square; and A&M Bargain Store in Upham’s Corner. Go to cityofboston.gov/deckthecity  to vote.