How accurate are TÜSİAR's polls?

ELECTIONTÜSİAR POLLACTUAL RESULT
2023-05-28 Cumhurbaşkanlığı 2. Tur
Erdoğan: 51.36%
Kılıçdaroğlu: 48.64%
Erdoğan: 52.18%
Kılıçdaroğlu: 47.82%
2023-05-14 Cumhurbaşkanlığı 1. Tur
Erdoğan: 48.71%
Kılıçdaroğlu: 46.58%
Oğan: 1.11%
Erdoğan: 49.52%
Kılıçdaroğlu: 44.88%
Oğan: 5.17%
2023-05-14 Genel Seçim
Cumhur: 48.7%
Millet: 35.5%
Emek: 11.1%
Cumhur: 49.49%
Millet: 35.04%
Emek: 10.55%