aliancista

Etymology
From.

Adjective

 * 1) being a member or supporter of a political coalition
 * 2)  political coalition
 * 3)  being a member or supporter of the Alianza por Chile
 * 4)  of the Alianza por Chile

Noun

 * 1) a member or supporter of a political coalition
 * 2)  a member or supporter of the Alianza por Chile