Madenli-Cankaya is one of the localities of İskenderun; it had 1,023 registered voters at the 2011 parliamentary election.
CHP took 820 of the 872 valid votes cast in the neighborhood at that election (94.0%). That puts the neighborhood 50.5 points above the party's district average. At the 2010 referendum 96.3% of the neighborhood voted 'no' — 36.0 points above the district average.
The picture has not changed since 2009: CHP has finished first in all of the last 4 elections. Turnout at the 2009 local election was 79.2%, 5.8 points below the district average.