"If, when I attain Buddhahood, sentient beings of the ten quarters who sincerely entrust themselves to me, desire to be born in my land, and say my Name even ten times, should not be born there, may I not attain the supreme Enlightenment." (The Primal Vow of Amida Buddha)
This shows that the Promise of Amida Buddha is addressed to ALL beings, without any discrimination or distinction between them. All are the object of Amida's Primal Vow, no matter how high or low they are on the scale of spiritual evolution, and especially if they are the lowest of the low:
"Know that the Primal Vow of Amida makes no distinction between people young and old, good and evil; only shinjin (faith) is essential. For it is the Vow to save the person whose karmic evil is deep and grave and whose blind passions abound."[1]
(Shinran Shonin)