Police departments in cities across the country are beefing up their ranks for Election Day, preparing for possible civil unrest and riots after the historic presidential contest.

Public safety officials said in interviews with The Hill that the election, which will end with either the nation’s first black president or its first female vice president, demanded a stronger police presence.

The relatively one-sided vote, 69-28, came only after a lengthy and heated debate that pitted privacy and civil liberties concerns against the desire to prevent terrorist attacks. It ended almost a year of wrangling over surveillance rules and the president''s warrantless wiretapping program that was initiated after the Sept. 11, 2001, terrorist attacks.