Navarrese People's Union
The Navarrese People's Union (UPN) had formed the government of the region since the 1996. Between 1991 and 2008 UPN had an agreement with the People's Party (PP), functioning as PP sister party in the region in exchange for the PP itself not contesting elections in Navarre. The pact was broken in October 2008 following a dispute over a budgetary vote in the Congress of Deputies. As a result, this was the first regional election since 1987 in which both parties ran separately.