Five judicial nominees, including Paul V. Niemeyer for the U.S. District Court in Maryland, have received the Senate Judiciary Committee's unanimous recommendation for approval.

Among those recommended for approval were John Wade Brorby for the 10th Circuit Court of Appeals and Edward F. Harrington to the U.S. District Court in Massachusetts.

Harrington, a former U.S. attorney, appeared before the committee twice, both times promising he will be vigilant in maintaining his composure if confirmed by the Senate. Former Massachusetts Bar Association presidents testified against him because they said he lacked judicial temperament.

Harrington described himself as "an aggressive trial lawyer" and denied he is prone to "flying off the handle."

Some top Maryland Republicans had denounced President Reagan's nomination of Niemeyer, saying that he had contributed to liberal Democratic candidates and did not vote in 1980 when Reagan was first elected president.

Daniel Fleming, state party chairman, also said Niemeyer, a Baltimore lawyer, claimed to be a lifelong Republican but voting records did not support his claim that he was registered as a Reublican from 1966 through 1978.

Niemeyer said the complaints "are not relevant to whether I would make a good judge or not."

The other nominations recommended Thursday for approval included Suzanne B. Conlon for the U.S. District Court for the Northern District of Illinois and Richard J. Arcara for the U.S. District Court for the Western District of New York.