Despite complaints that money is tight this year, six Republican and Democratic contenders in the Montgomery County executive's race have received a total of $96,417 in campaign contributions, according to campaign reports filed this week.

The totals for the executive candidates competing in Tuesday's primary elections is $20,000 more than was reported by three contenders in the executive's race in the 1974 primary.

The three Democrats running in a close battle for their party's nomination received the most money - more than $80.913. Two of three Republican candidates reported income of $15,504, and a third, Gerald Warren, said he has raised no money.

The amounts reported were donations through Aug. 29. Among the Democrats, State Sen. Charles Gilchrist, who began his campaign a year earlier than his opponents, received the most - $32,985.37. He also reported that he had lent his campaign $10,000, while his campaign manager, Jack Sexton, and Sexton's wife Janet, had lent another $2,000.

Gilchrist, a tax lawyer in Washington and Baltimore until he became a state senator four years ago, received his largest chunk of support - more than $7,000 - from lawyers practicing in the District of Columbia, Montgomery County and Baltimore. He drew heavily on his collegiate connections at St. Albans School, Williams College and Harvard University, according to his staff.

In addition, Gilchrist received the most union support - $1,375 - of any Montgomery executive candidate after his endorsement by the Greater Washington Labor Council. His contributions from developers and county businesses was more than $3,300.

Gilchrist reported that he had spent $29,011.67.

Planning Board Chairman Royce Hanson, who has presided over many of the county's major development decisions in the past five years, received more development and business money than his opponents.

Of Hanson's total donations of $27,710, he received more than $7,200 from realtors, builders, engineers and property owners; another $1,800 from lawyers, including some zoning attorneys, and more than $6,500 from businesses. He also received more than $6,800 in contributions from friends and political associates.

Hanson reported expenditures of $26,457 and loans from supporters of $2,600.

The third Democrat, council member John Menke, reported contributions of $20,218. Menke, who sponsored the end of rent control in the county last year, received more than $4,000 in donations from builders, engineers, architects and property owners.

He received more support from farmers than his opponents - more than $4,600. Much of the rest of Menke's money came from civic and business associates in the northwestern part of the county where he lives.

Menke's expenditures totaled $17,832.

Among the Republicans, Richmond M. Keeney, an insurance agent and planning board member, reported contributions of $12,242. More than half were from development, insurance and business interests and lawyers, and another sizeable amount came from friends and along political ties' according to his staff.

Albert Ceccone, a realtor, said he had received $3,262 after putting a $100 ceiling on contributions. In addition, he said he lent his campaign about $4,500.

Warren, a lawyer from Poolesville, reported no income, a $400 debt for printing and a $30 contribution in bumper stickers.