United Left (IU), which formed a coalition with the Independent Socialists of Extremadura (SIEx), maintained its 3 seats but was unable to make gains.

Juan Carlos Rodríguez Ibarra was elected for his sixth and last term in office as President of the Regional Government of Extremadura, as he would announce in September 2006 he would not stand for re-election in 2007.

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

The 65 members of the Assembly of Extremadura 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 in each constituency.

[2][3][4] The president had the prerogative to dissolve the Assembly of Extremadura 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 under this procedure.

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