Wahabi met then-Defense Minister Ariel Sharon in 1981. Starting in 1996, he served as Sharon's personal ambassador to Israel's Arab neighbors, Egypt and Jordan.
He was elected to the 16th Knesset in 2003 on the Likud list. In March 2005 he was appointed Deputy Minister in the Ministry in the Prime Minister's Office, and became Deputy Minister of Education, Culture and Sport in June 2006.
When Sharon left Likud to found Kadima, Wahabi followed, and was elected to the 17th Knesset in 2006 on the Kadima list. He assumed the position of Deputy Speaker of the Knesset. In October 2007 he was added to Ehud Olmert's cabinet as Deputy Foreign Affairs Minister. He retained his seat in the 2009 elections after being placed 21st on the Kadima list.
His public activities include:
- Director General, the Ministry for Regional Cooperation (1999–2002)
- Senior Political Advisor, Ministry of Foreign Affairs (1998–1999)
- Aide to the Minister of Infrastructure (1996–1999) (Ariel Sharon)
On February 27, 2007, while then president Moshe Katzav was on leave of absence due to an indictment for rape charges, and interim president Dalia Itzik was on a trip abroad, Wahabi, who had previously served as interim speaker of the Knesset, was named acting president of Israel for two weeks, becoming the first non-Jew and Druze to be Israel's acting head of state.[2]
Wahabi condemned a website that "incited against Israeli soldiers" as war criminals and published their personal information and called for the punishment of those responsible.[3]
Shortly before the 2013 elections Wahabi joined the new Hatnuah party, and was placed twelfth on its list.[4] He lost his seat as the party won only six seats.