The term of the Parliament of Cantabria expired four years after the date of its previous election. Elections to the Parliament were fixed for the fourth Sunday of May every four years. The previous election was held on 24 May 2015, setting the election date for the Parliament on Sunday, 26 May 2019. The president had the prerogative to dissolve the Parliament of Cantabria 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. In the event of an investiture process failing to elect a regional president within a two-month period from the first ballot, the Parliament was to be automatically dissolved and a fresh election called. Any snap election held as a result of these circumstances would not alter the period to the next ordinary election, with elected deputies merely serving out what remained of their four-year terms.
Parliamentary status
The Parliament of Cantabria was officially dissolved on 2 April 2019, after the publication of the dissolution decree in the Official Gazette of Cantabria. The table below shows the status of the different parliamentary groups in the Parliament at the time of dissolution.
Parties and candidates
The electoral law allowed for parties and federations registered in the interior ministry, coalitions and groupings of electors to present lists of candidates. Parties and federations intending to form a coalition ahead of an election were required to inform the relevant Electoral Commission within ten days of the election call, whereas groupings of electors needed to secure the signature of at least one percent of the electorate in Cantabria, disallowing electors from signing for more than one list of candidates. Below is a list of the main parties and electoral alliances which contested the election:
Opinion polls
The table below lists voting intention estimates in reverse chronological order, showing the most recent first and using the dates when the survey fieldwork was done, as opposed to the date of publication. Where the fieldwork dates are unknown, the date of publication is given instead. The highest percentage figure in each polling survey is displayed with its background shaded in the leading party's colour. If a tie ensues, this is applied to the figures with the highest percentages. The "Lead" column on the right shows the percentage-point difference between the parties with the highest percentages in a given poll. When available, seat projections are also displayed below the voting estimates in a smaller font. 18 seats were required for an absolute majority in the Parliament of Cantabria.
