Navarra Suma (English: "Sum Navarre",[3] NA+) was an electoral alliance in Navarre formed by Navarrese People's Union (UPN), Citizens (Cs) and the People's Party (PP) ahead of the April 2019 Spanish general election and kept for the May 2019 local and regional elections.

[8][9] The alliance had its precedent in the 2015 Navarrese regional and Spanish local elections, where the Navarrese People's Union (UPN), the People's Party (PP) and Citizens (Cs) had run separately, leading to significant vote splitting within the centre-left to right-wing political spectrum that favoured the election of left-wing governments both at the regional and the local level, including the loss of Pamplona to an EH Bildu's controlled council.

[14][15] Throughout the next week, it was unveiled that UPN had entered talks with Cs to form a three-way alliance comprising all three elections—general, regional and local—with the decision being approved by the parties on 10 March and officially signed by UPN and Cs leaders, Javier Esparza and Albert Rivera, on the next day.

[23][24] In the 26 May elections, the coalition was the most-voted political force in Navarre by securing over 36% of the vote and 20 seats,[25] as well as being able to regain control of the five largest cities in the region—Pamplona, Tudela, Egüés, Barañain and Burlada[26]—however, it ultimately failed in forming the regional government and remained in opposition.

[27][28] Nonetheless, the positive results achieved by the electoral platform in the Navarrese regional and local elections provided the inspiration for Spanish PP leader Pablo Casado to put forward a similar alliance proposition ahead of the November 2019 general election, including a participation or support of Vox,[29] but the proposal failed to materialize over Cs's refusal to it.