Independent Solution (, SI) was a regional political party in Castile and León, centered in the province of Burgos. It was formed as a split from the People's Alliance in 1987 by the then mayor of Burgos, José María Peña San Martín, securing an absolute majority in that year's local election in the city, before merging into the People's Party ahead of the 1991 election. It was again established to contest the 1995, 2003 and 2007 local elections before being finally disbanded in 2011.
Electoral performance Cortes of Castile and León Cortes of Castile and León Election Leading candidate Votes % Seats 1987 Tomás Cortés 19,282 1.3 (#6) 1995 José María Peña San Martín 9,107 0.6 (#6) —
City Council of Burgos City Council of Burgos Election Leading candidate Votes % Seats 1987 José María Peña San Martín 44,638 54.7 (#1) 1995 Antonio Mateos García 3,131 3.5 (#5) 2003 José María Peña San Martín 8,692 8.8 (#3) 2007 6,009 6.5 (#3)
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