Yenikoy ranks 174th by electorate among the 184 localities of Adıyaman. The neighborhood has a single ballot box, and 50 voters were registered there for the 2023 parliamentary election.
49 people voted at that election. AK Parti took the most votes with 34; CHP followed with 9. AK Parti's share here is 24.1 points above the district average. In the presidential runoff, 34 of 44 valid votes went to Recep Tayyip Erdoğan — 15.3 points above the district average. At the 2017 referendum 72 of 73 valid votes were 'yes' — 34.8 points above the district average.
Turnout at the 2023 parliamentary election was 98.0%, 17.8 points above the district average. The electorate shrank from 99 registered voters in 2011 to 50 in 2023 — a change of about 49 percent. At the 2024 local election the neighborhood went to AK Parti with 27 votes, while Adıyaman as a whole was won by CHP. The picture has not changed since 2009: AK Parti has finished first in all of the last 9 elections.