 On January 30, 2010, the Senate Republican Caucus again chose him to serve as Minority Leader with Senator David R. Brinkley as Minority Whip, who defeated Senator Nancy Jacobs.Senator Kittleman resigned as Minority Leader on January 18, 2011.During the 2011 General Assembly session, Kittleman broke ranks with his fellow Republicans and voted in favor of legalizing same-sex marriage.