Here it is from old Gallup:
Younger, Liberal Americans Least Likely to Believe in God
Belief in God has fallen the most in recent years among young adults and people on the left of the political spectrum (liberals and Democrats). These groups show drops of 10 or more percentage points comparing the 2022 figures to an average of the 2013-2017 polls.
Which is no surprise. The bad behaviors exhibited on the right, such as grifting, promoting theocracy, indulging in mendacity and deceptions at the highest levels of the judiciary in order to secure funding of religious institutions and doctrines, and much more of which I’m undoubtedly not aware, makes it easy for the youth, who have not yet made major intellectual and moral investments in the idea of a Divinity, to back away and reconsider the whole proposition of a Divinity, much less a Manifest Destiny, white supremacy, and a bunch of other unmoored ideas.
Some of this will apply to the Left as well, as absolutely no one should escape scrutiny, but, while there are missteps, they are not as egregious, obvious, and sleazy as those on the right.