Five Republicans, five Democrats, and an independent are running for the five House of Delegates seats in northern Fairfax County, Falls Church, and Fairfax City.

Three of the candidates are incumbents - seven-term Del. Dorothy S. McDiarmid and two-term Del. Raymond E. Vickey Jr., both Democrats, and fifth-term Republican Del. Vincent F. Callahan.

Three candidates - Republicans Martin H. Perper and Peter W. Scott, and Democrat Kenneth Plum - have previously run for public office.

The political newcomers are Barbara Weiss and Karetta Hubbard, both Democrats; Michael D. White and Thomas Rae Cagley, both Republicans, and independent candidate John G. (Jack) Corboy.

There are more than 132,000 registered voters in the 18th District, which covers 200 square miles.

The Democratic candidates:

Karetta Browing Hubbard, 32, of 2293 Emerald Heights Ct., Reston, is a political newcomer who has built her campaign platform on caring "for our human resources and for the quality of life in Northern Virginia."

Hubbard favors increased support of the state child care program, tax relief for the elderly, the ratification of the equal rights amendment, and state funding for the completion of the Metrorial system.

Hubbard is the former creator-producer-moderator of a Reston cable television show conerning women's issues. She worked in the Northern Virginia campaign for President Carter.

Dorothy S. McDiarmid, of 390 E. Maple Ave., Vienna, is seeking reelection to her eighth term as a delegate.

McDiarmid, who refuses to give her age even in the official biographies of members of the Virginia General Assembly, is campaigning on her legislative experience, which includes membership on the powerful House Appropriations Committee. She has also been influential in the areas of child care and education.

"It's obvious that I'm the senior member" of the state of candidates running in the delegate race, said the grandmotherly McDiarmid at a recent joint appearance. She said her experience is needed in Richmod.

"The new broom sweeps clean, but the old broom knows the corners," she said.

McDiarmid is a staunch supporter of ERA.

Kenneth Plum, 35, of 2308 November La., Reston, ran unsuccessfully in the 1973 and 1975 delegate races.

A Fairfax County school administrator, Plum favors more autonomy for local governments and alternative ways to deal with juvenile offenders. He says more recreation and counseling programs are needed for juveniles.

Plum favors increasing the membership of the State Corporation Commission from three to five members. He also wants to trim the responsibilities of the SCC, which would mean giving some of its administrative concerns to other state offices.

A native Virginian, Plum has been active in state politics for 20 years.

Raymond E. Vickery Jr., 35, of 2733 Willow Dr., Vienna, is finishing his second term in the General Assembly.

An attorney, Vickery said his main campaign issue is "government efficiency." He has sharply criticized Republican Gov. Mills Goodwin for not being able to tell the last legislative session how many employees are on the state's payroll. He has accused the state taxation department of "gross inefficiency" for the delay in depositing income tax checks it receives.

Since being in office, Vickery has been successful in opening all committee meetings to all legislators.

"Inefficiency and secrecy in government costs you money and Vickery is determined to stamp out both," he tells potential voters in a campaign brochure.

Barbara W. Weiss, 47, of 609 Jerry La., Vienna, is a community activist who is making her first bid for public office.

A former Naval officer, Weiss has worked on the state and local budget matters for the League of Women Voters and lobbied in the General Assembly for more support of child care needs. She was selected during the primary as the outstanding non-incumbent woman candidate by the Fairfax County Democratic Women's Caucus.

Weiss favors more authority for local governments and ratification of the equal rights amendment.

She is an avid tennis player who tries to jog a mile each morning.

The Republican candidates:

Thomas Rae Cagley, 36, of 6846 Westmoreland Rd., Falls Church, is making his first bid for public office.

An economist with a management consultant firm, Cagley believes that government needs to be "more manageable and people oriented. Government, at all levels, drowns the average citizen in waves of regulation, paperwork, and red tape. Government should work for people, not against them," he tells potential voters in his campaign literature. He favors repeal of the state's 4 per cent sales tax on food and continuation of the state right-to-work laws.

A charter member of Young Americans for Freedom in Indiana, Cagley has been active in Virginia and Indiana politics for 15 years.

Vincent F. Callahan, 45, of 6220 Nelway Dr., McLean, is seeking reelection to his sixth term in the General Assembly. Callahan ran unsuccessfully for Congress last year.

He is completing his sixth year on the House Appropriations Committee, which, he says, is "where the action is." Callahan says he has "a sound fiscal background and an awareness of public needs."

He was chairman of a legislative committee that studied the needs of young children in 1974, leading to creation of a state Diivision of Children in the last session of the General Assembly.

A partner iin Callahan Publications, a a newsletter started by his father in 1944. Callahan is chairman of the Republican Caucus.

Martin H! Perper, 37, of 6653 McLean Dr., McLean, is a management consultant in the hotel business. Last fall, he ran for the U.S. Senate seat now held by Sen. Harry F. Byrd (I-Va.)

He is currently involved in a lawsuit stemming from his unsucessful bid for the Senate seat. An advertising firm, Cinemaster Studios Inc. of Rosslyn, Va., has filed suit against Perper for failing to pay for advertising he received from the company and is asking for more than $100,000 in damages. Perper denies that he owes the company any money and has asked the company for $2 million in damages for defamation of character.

Perper, who is wearing a neck brace as a result of a recent car accident, said that if be is elected he will work for legislation to end the sales tax on food and prescription drugs. He says the state should contribute Northern Virginia's share to completion of the Metro rail system. He supports mandatory prison sentences for the use of a gun in the commission of a felony.

Peter W. Scott, 43, of 3336 Hemlock Dr., Falls Church, ran unsuccessfully for the Providence District seat on the Fairfax County board of supervisors two years ago.

A financial consultant, Scott emphasizes his business background as he campaigns. "Running a state legislature is one of obtaining money and managing money," said Scott, who received a bachelor's degree in economics from Amherst College and a master's in business administration from the University of Hartford.

A former major in the Marine Corps, Scott favors tax relief for retirees, state aid for the completion of the Metro rail system, and expansion of the State Corporation Commission.

If elected, he will answer "to no one but his constituents," reads his campaign literature.

Michael Dennis White, 25, of 7722 Iroquois Ct., Falls Church, is a management consultant with an international public accounting firm.

He is the youngest candidate in this race and sometimes displays his blue "White for Delegate" buttons in an empty disposable diapers box. (His wife recently had a baby.)

A Phi Beta Kappa graduate of Boston College, White opposes higher taxes and believes he could make improvements in the state's budgeting process. He favors state aid for the completion of the Metro rail system, providing that there is a sound financial plan for Metro completion. He favors elected school boards. White says that "government should be the servant not the master."

John G. (Jack) Corboy, 60, of P.O. Box 711 in Vienna, is the independent in this race. He has been a judge in courts in Fairfax, Falls Church, and Vienna.

Corboy said he is running for the delegate seat because "I want to restore integrity in government." He said he has been campaigning mostly through his friends, who he has allowed to contribute no more than $1 each to his campaign.

"I don't want to be sold out to anybody," he said of the $1 contributions.

A former member of the Fairfax County Park Authority, Corboy said he is concerned about high taxes, the increasing utility rates, and clean air and clean streams. Although he has been asked many times for his position on ERA, Corboy said, he isn't campaigning for or against it. "If I found the majority of the ladies in the 18th District are for it (ERA), I would be for it."