New York finally has a congressional redistricting plan, or will have, if Gov. Hugh L. Carey (D) ignores pleas from some Democrats and signs it into law. The state drops from 39 to 34 House members, so there are lots of bruised bodies.

Rep. Donald J. Mitchell (R) eased the situation a bit by announcing retirement two months ago. But there are four prospective matchups of incumbents. Rep. Jonathan B. Bingham (D) is thrown in with Rep. Ted Weiss (D), with the territory favoring Weiss. Bingham has not said whether he will run or retire after 18 years.

A similar intraparty scrap matches Rep. Gregory W. Carman (R) with Rep. John LeBoutillier (R), with the territorial advantage to the latter. There are rumors that Carman may accept a judgeship.

Democrats now are underdogs in the two interparty scraps, with Rep. Peter A. Peyser (D) challenging Rep. Benjamin A. Gilman (R) and Rep. Leo C. Zeferetti (D) up against Rep. Guy V. Molinari (R).

Rep. Frederick W. Richmond (D), who has other difficulties, could face additional trouble with a Hispanic primary challenger in a redrawn district, and Rep. Gary A. Lee (R) has not decided whether to run (against primary opposition) in the district Mitchell is vacating or whether to challenge Rep. George C. Wortley (R) or Rep. Stanley N. Lundine (D) in neighboring districts.