Sinekli is one of the localities of Silivri; it had 266 registered voters at the 2011 parliamentary election.
The neighborhood parts ways with the district as a whole. At the 2011 parliamentary election it went to CHP with 128 votes, while across Silivri the leading party was AK Parti, with CHP here running 15.7 points above its district average. At the 2010 referendum 186 of 242 valid votes were 'no' — 18.8 points above the district average.