History. No count: Vox sat in Congress after only two of the seven elections, so past elections do not measure this. The question comes from Vox's stated aim.
Hunch. A government has to be appointed first, and the new parliament sits only on 23 December, while Vox says posts are the last thing it negotiates.
Resolves YES if by 5 January 2027 a royal decree in the BOE appoints a Vox member or a person Vox named as a minister, and NO otherwise, including if no government has been formed. Politico Europe and The Guardian are the backup.
We looked for cases where a Spanish prime minister called a general election at least a month before the four years were up. We found nine since 1977, and seven with full seat results on official pages. Right-wing parties together won 176 of 350 seats only once, in 2011.