The 2015 Navarrese regional election was held on Sunday, 24 May 2015, to elect the 9th Parliament of the Chartered Community of Navarre. All 50 seats in the Parliament were up for election. The election was held simultaneously with regional elections in twelve other autonomous communities and local elections all throughout Spain.

Regional president Yolanda Barcina, who had only came to power in 2011 after the establishment of a coalition government between the Navarrese People's Union (UPN) and the Socialist Party of Navarre (PSN–PSOE)—which proved to be short-lived, as Barcina herself expelled the PSN from the cabinet in 2012 over disagreements with then-PSN leader Roberto Jiménez—announced on 10 November 2014 that she would not seek re-election for a second term in office. This came after a legislature that proved to become the most unstable since the Spanish transition to democracy, with Barcina's minority government being unable to pass any budget following 2012, with one failed motion of no confidence in 2013 and the scare of a new one in 2014 over a number of corruption scandals besieging UPN.

2015 Navarrese regional election

After a spell of 19 years in power since 1996, the election saw UPN's support plummet to a low in popular support unseen since 1987, whereas the PSN scored its worst result in history. Both parties, together with the support obtained by the then-ruling party in Spain, the People's Party (PP), commanded just 24 seats, two short of a majority, allowing an alliance of Geroa Bai (GBai), EH Bildu and Izquierda-Ezkerra (I–E) with external support from Podemos to access the regional government and have GBai's Uxue Barkos elected as new president.

2015 Navarrese regional election

Overview

Electoral system

The Parliament of Navarre was the devolved, unicameral legislature of the Chartered Community of Navarre, having legislative power in regional matters as defined by the Spanish Constitution and the Reintegration and Enhancement of the Foral Regime of Navarre Law, as well as the ability to vote confidence in or withdraw it from a regional president.

2015 Navarrese regional election

Voting was on the basis of universal suffrage, which comprised all nationals over 18 years of age, registered in Navarre and in full enjoyment of their political rights. Additionally, Navarrese people abroad were required to apply for voting before being permitted to vote, a system known as "begged" or expat vote (). The 50 members of the Parliament of Navarre were elected using the D'Hondt method and a closed list proportional representation, with a threshold of three percent of valid votes—which included blank ballots—being applied regionally.

Election date

The term of the Parliament of Navarre expired four years after the date of its previous election, unless it was dissolved earlier. The election decree was required to be issued no later than the twenty-fifth day prior to the date of expiry of parliament and published on the following day in the Official Gazette of Navarre (BON), with election day taking place on the fifty-fourth day from publication. The previous election was held on 22 May 2011, which meant that the legislature's term would have expired on 22 May 2015. The election decree was required to be published no later than 28 April 2015, with the election taking place on the fifty-fourth day from publication, setting the latest possible election date for the Parliament on Sunday, 21 June 2015.

The president had the prerogative to dissolve the Parliament of Navarre and call a snap election, provided that no motion of no confidence was in process, no nationwide election was due and some time requirements were met: namely, that dissolution did not occur either during the first legislative session or within the legislature's last year ahead of its scheduled expiry, nor before one year had elapsed since a previous dissolution under this procedure. In the event of an investiture process failing to elect a regional president within a three-month period from the election date, the Parliament was to be automatically dissolved and a fresh election called.