With Thai protests intensifying against the monarchy, Prime Minister Prayut Chan-ocha’s hold on power is growing more tenuous by the day.

A poll published Sunday by Bangkok’s Suan Dusit University showed more than 62% of participants said discontent with Prayut was the key reason for the recent demonstrations. The former army chief has run Thailand for more than six years, taking power in a 2014 coup and returning as premier after elections last year under a constitution produced by his military regime.

Prayut has so far refused to resign in the face of repeated deadlines set by protesters to step down. During a special parliament session this week, he said that the government would restart in November a stalled process for amending the constitution and accused many lawmakers of having "short memories.”