Aydın became the Minister of Public Works and Housing in the triple coalition government formed by the Democratic Left Party (DSP), the Motherland Party (ANAP) and the MHP. As Minister, Aydın dealt with the aftermath of the 1999 İzmit earthquake and the 1999 Düzce earthquake, with several new housing developments being built for victims left homeless after the earthquakes. He left his position as Minister on 5 September 2001 and lost his seat in the 2002 as the MHP once again fell below the 10% election threshold and lost all its parliamentary representation.