On 16 June 2002, Beaugendre was elected as a deputy to the Twelfth Legislature of the French Republic (2002-2007) in Guadeloupe's third electoral district.
Taking advantage of a split in the Socialist Party, he got himself reelected mayor of Capesterre-Belle-Eau in March 2008 with 62.16% of the ballots cast in the second round of voting.
[3] He also held on to his mayoralty in the wake of Guadeloupe's 2014 municipal elections, securing 53.65% of the ballots cast in the second round of voting.
[2] In February 2019, he succeeded Lucette Michaux-Chevry to the presidency of the communauté d'agglomération Grand Sud Caraïbe.
[4] At Guadeloupe's 2020 municipal elections, Beaugendre lost in the second round of voting to Jean-Philippe Courtois, putting to an end to his more than 25-year tenure in the Capesterre-Belle-Eau mayor's office.