Virginia state Sen. L. Douglas Wilder, the Democratic nominee for lieutenant governor, disclosed today that, after trailing his Republican opponent in fund raising he has come close to matching state Sen. John H. Chichester in the latest reporting period.

Wilder raised $182,909 between Oct. 2 and Oct. 25, compared with $187,270 in that period by Chichester, whose report was made public yesterday. Chichester still leads in total contributions, $792,030 to $647,381.

The largest contributor to Wilder's campaign this month was the Virginia AFL-CIO, which added $7,500 to the $4,000 it had previously given him.

Four other unions made smaller contributions to Wilder, according to the report.

Other unions contributing to the Wilder campaign were the International Brotherhood of Electrical Workers, $2,000; the Communications Workers of District 2, in Rockville, $1,000; the state's United Auto Workers, $1,000, and the American Postal Workers political action committee, $400. The five union contributions totaled $11,900.

Paul Goldman, Wilder's campaign manager, said the report "shows that Sen. Wilder has been able to raise more small contributions than anyone." Goldman said he was not concerned that Republicans, who have attacked Wilder as one of the most liberal members of the Virginia legislature, might try to make something out of the labor donations. Goldman said they make up a very small proportion -- about 6 percent -- of Wilder's recent contributions.

According to the latest report filed by GOP gubernatorial candidate Wyatt B. Durrette, the details of which were made public today, Durrette is outraising and outspending his opponent, Democrat Gerald L. Baliles, thanks in part to nearly $500,000 he received from a fund-raising appearance by President Reagan in Arlington earlier this month. Additionally, Durrette passed on $50,000 to Chichester and state Del. W.R. (Buster) O'Brien, the GOP nominee for attorney general.

While Durrette shows only a slight lead in total fund raising, listing contributions of just over $3.6 million, compared with about $3.5 million for Baliles, nearly $1 million of Baliles' total was spent helping him wrest his party's nomination from Lt. Gov. Richard Davis. An aide to Durrette said his prenomination spending was minimal by comparison.

A story in yesterday's Washington Post incorrectly reported the amount raised by Baliles in the four-week reporting period. The correct amount was $829,005, compared with $1,008,622 during that period by Durrette.

The largest recent private donor to the Durrette campaign, according to the new report, was Cranston Securities Co. of the District, which gave $25,000.

A number of Washington area developers and contractors also were among Durrette's biggest contributors: Fort Meade Aggregates Inc. of Bladensburg gave $18,000; Milton V. Peterson of Fairfax, $15,000; Mr. and Mrs. Sidney O. Dewberry of Arlington, $11,200, and each of the following firms gave $10,000: Ralph D. Rocks of McLean, Roubin and Janeiro Inc. of Fairfax, Walker Urquhart & Co. of Fairfax, and Dee Ci Construction Co. of Bladensburg. James W. Irving Co. of Vienna gave $8,000.

Other big Durrette contributors from Northern Virginia were Moore Cadillac of Vienna, $17,500; Tyson's Toyota, $11,000, and Fairfax attorney M. Charlotte Garner, $10,000.