ran an aggressive campaign, parlaying his image as a tough leader who had cleaned up the city. Giuliani's popularity was at its highest point to date, with a late October 1997 Quinnipiac University Polling Institute poll showing him as having a 68 percent approval rating; 70 percent of New Yorkers were satisfied with life in the city and 64 percent said things were better in the city compared to four years previously. Throughout the campaign he was well ahead in the polls and had a strong fund-raising advantage over Messinger. On her part, Messinger lost the support of several usually Democratic constituencies, including gay organizations and large labor unions. The local daily newspapersThe New York Times, Daily News, New York Post and Newsdayall endorsed Giuliani over Messinger. In the end, Giuliani won 58% of the vote to Messinger's 41%, becoming the first registered Republican to win a second term as mayor while on the Republican line since Fiorello H. La Guardia in 1941. Voter turnout was the lowest in twelve years, with 38% of registered voters casting ballots. The margin of victory included gains in his share of the African American vote (20% compared to 1993's 5%) and the Hispanic vote (43% from 37%) while maintaining his base of white ethnic and Catholic and Jewish voters from 1993. Mayoralty Giuliani served as mayor of New York City from 1994 through 2001. Law enforcement In Giuliani's first term as mayor, the New York City Police Departmentat the instigation of Commissioner Bill Brattonadopted an aggressive enforcement/deterrent strategy based on James Q. Wilson's "Broken Windows" approach. This involved crackdowns on relatively minor offenses such as graffiti, turnstile jumping, cannabis possession, and aggressive panhandling by "squeegee men", on the theory that this would send a message that order would be maintained. The legal underpinning for removing the "squeegee men" from the streets was developed under Giuliani's predecessor, Mayor David Dinkins. Bratton, with Deputy Commissioner Jack Maple, also created and instituted CompStat, a computer-driven comparative statistical approach to mapping crime geographically and in terms of emerging criminal patterns, as well as charting officer performance by quantifying criminal apprehensions. Critics of the system assert that it creates an environment in which police officials are encouraged to underreport or otherwise manipulate crime data. An extensive study found a high correlation between crime rates reported by the police through CompStat and rates of crime available from other sources,