As stated elsewhere in this discussion: downvotes exist for comments on HN, but not for submissions, as far as anyone is aware, which is what makes it puzzling.

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1970-01-01 2 hours ago | parent [-]

As stated elsewhere in this discussion: downvotes exist for both comments on HN and for submissions, as far as anyone is aware, makes perfect sense.

	▲	nickthegreek an hour ago \| parent \| next [-]
		Then they should show us a screenshot of the interface that allows it.
	▲	whilenot-dev an hour ago \| parent \| prev [-]
		Users aren't in agreement of the needed karma threshold for the downvote button to appear on submissions, though. There seems to be a way through URL-params, as mentioned in another comment[0], but I'd consider that method an auth-related bug, rather than an existing downvote feature for submissions. [0]: https://news.ycombinator.com/item?id=48107572