A new Metroscopia poll for El País, published on Sunday evening, suggests the flight of 900,000 votes from the Spanish Socialist Party (PSOE) to Ciudadanos, some 18% of total PSOE voters at the general election in 2016.

Nearly the same number, 17%, express doubts about whom to vote for, while the leakage to the Popular Party (2%) or Podemos (1%) is minimal.

Several polls last week [highlighted][h] the struggle between Ciudadanos and the Popular Party (PP) for first place in the polls, a trend the government attempted to brush off.

El País estimated the size of the Ciudadanos proble...