[4] He also served as president of the Employers' Confederation of Mexico (Coparmex) in Aguascalientes, and as chairman of the board of BBVA Bancomer and director of seven other banks.

As president of the Association of Grocery Store Owners, González maintained a close relationship with the grocers of Aguascalientes.

After an intense campaign and an unprecedented mobilization of many population sectors in Aguascalientes,[6] he secured a surprise victory over Institutional Revolutionary Party (PRI) candidate Héctor Hugo Olivares Ventura with 53% of the vote (against Olivares Ventura's 36%), making him the state's first governor not to come from the ranks of the PRI.

[9] On 25 August 2004, he was appointed by President Vicente Fox as an assistant secretary at the Interior Ministry, a position where he remained until 9 January 2006.

That year, he resigned to be nominated as a candidate for the Senate, representing the state of Aguascalientes, a position he was elected to until 2012 for the 60th and 61st legislatures.