Both liberal Citizens and far-right Vox saw an increase in support, with both parties gaining seats and, in the latter's case, entering the chamber for the first time.

[1] Voting for the Parliament was on the basis of universal suffrage, which comprised all nationals over 18 years of age, registered in Cantabria and in full enjoyment of their political rights.

[2] The 35 members of the Parliament of Cantabria were elected using the D'Hondt method and a closed list proportional representation, with an electoral threshold of five percent of valid votes—which included blank ballots—being applied regionally.

[1][3][4] 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.

The highest percentage figure in each polling survey is displayed with its background shaded in the leading party's colour.

The "Lead" column on the right shows the percentage-point difference between the parties with the highest percentages in a poll.