Onsen-Pinarbasi is one of the localities of Kahramanmaras Merkez; it had 2,316 registered voters at the 2011 parliamentary election.
AK Parti took 1,880 of the 2,140 valid votes cast in the neighborhood at that election (87.9%). That puts the neighborhood 7.6 points above the party's district average. At the 2010 referendum 95.5% of the neighborhood voted 'yes' — 6.1 points above the district average.
Turnout at the 2009 local election was 99.5%, 10.7 points above the district average. The picture has not changed since 2009: AK Parti has finished first in all of the last 4 elections.