 After meagre results for his 2005 senatorial candidacy, and ahead of the 2007 elections, he joined a group of Province-based parties and Macri's Commitment to Change in a new centre-right coalition dubbed Republican Proposal ("Propuesta Republicana", PRO).On that ticket, Macri was elected Chief of government of Buenos Aires Autonomous City.Since the 2008 agricultural sector strikes, political support for President Cristina Fernández de Kirchner and her husband, ex-president Néstor Kirchner, diminished considerably.