As he seeks to extend the discussion about a possible candidacy for mayor — and shift attention away from the online sex-messaging scandal that cost him his Congressional seat — Anthony D. Weiner released a 21-page policy booklet on Sunday that he described as a blueprint for keeping New York City “the capital of the middle class.”

The document, named “Keys to the City,” was largely drawn from a booklet of the same title, theme, and format that he distributed five years ago, in anticipation of a mayoral bid in 2009 that he later abandoned.

Mr. Weiner, who said the report was intended merely to “generate some discussion,” did expand on his old ideas and added a few new ones, including a city-run single-payer health care program; a requirement that sex offenders wear GPS tags for easy tracking; and a British House of Commons-style “question time” for New York City’s mayor.

But many sentences and, in some cases, complete paragraphs, are repeated verbatim from the earlier document, and the updated booklet does not address many high-profile issues in this year’s mayoral contest, including the police tactic of stop, question and frisk.