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

[2] The expat vote system was attributed responsibility for a major decrease in the turnout of Spaniards abroad during the years it had been in force.

[3] The 109 members of the Parliament of Andalusia are elected using the D'Hondt method and a closed list proportional representation, with an electoral threshold of three percent of valid votes—which includes blank ballots—being applied in each constituency.

[1][4][6] The president has the prerogative to dissolve the Parliament of Andalusia and call a snap election, provided that no motion of no confidence is in process and that dissolution does not occur before one year has elapsed since the previous one.

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