As happened with the concurrent nationwide election, results in Andalusia were heavily influenced by political controversy derived from the 11 March train bombings in Madrid.

The ruling Spanish Socialist Workers' Party of Andalusia (PSOE–A) exceeded all opinion poll expectations by securing a comfortable majority.

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

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

[1][2][4][5][6] The president had the prerogative to dissolve the Parliament of Andalusia and call a snap election, provided that no motion of no confidence was in process and that dissolution did not occur before one year had elapsed since the previous one.

The table below lists opinion polling on the perceived likelihood of victory for each party in the event of a regional election taking place.