As of October 1, 2020, there are 9 states that are ruled by a single party:
æ z WORD_BOUNDARY ʌ v WORD_BOUNDARY ɑ k t oʊ b ə ɹ WORD_BOUNDARY w ʌ n WORD_BOUNDARY t uː WORD_BOUNDARY θ aʊ z ə n d WORD_BOUNDARY t w ɛ n t i WORD_BOUNDARY ð ɛ ɹ ɑ ɹ WORD_BOUNDARY n aɪ n WORD_BOUNDARY s t eɪ t s WORD_BOUNDARY ð æ t WORD_BOUNDARY ɑ ɹ WORD_BOUNDARY ɹ uː l d WORD_BOUNDARY b aɪ WORD_BOUNDARY ʌ WORD_BOUNDARY s ɪ ŋ ɡ ə l WORD_BOUNDARY p ɑ ɹ t i WORD_BOUNDARY