Ranked 92nd among the 145 localities of Muş, Kayalisu carried 279 registered voters at the 2023 parliamentary election.
The neighborhood parts ways with the district as a whole. At the 2023 parliamentary election it went to AK Parti with 44.0%, while across Muş the leading party was Yeşil Sol Parti, with AK Parti here running 15.4 points above its district average. In the presidential runoff Recep Tayyip Erdoğan took 70.3% here — 16.7 points above the district average. At the 2017 referendum 91.9% of the neighborhood voted 'yes' — 27.3 points above the district average.
Turnout at the 2024 local election was 58.7%, 12.8 points below the district average. The tightest race came at the 2015 parliamentary election: AK Parti took 38 votes to Yeşil Sol Parti's 34 — a margin of just 4 votes. First place has changed hands 4 times here since 2011. AK Parti stood at 90.0% at the 2011 parliamentary election and fell to 44.0% by 2023.