Virginia Republican senatorial candidate John Warner, who said on one occasion last month he wouldn't be going out of state to raise money for his Senate campaign, traveled to Capitol Hill Thursday night and raised approximately $20,000 in about an hour and a half.

The trip was part of a Republican fund-raising tripleheader Thursday night that raised a total of about $37,500 and featured such disparate Warner supporters as House Minority Leader John Rhodes, former congressman and defense secretary Melvin Laird, former Texas governor John Connally, and - making his first major appearance with the Warner campaign - incumbent Republican Sen. William L. Scott of Virginia, whom Warner hopes to succeed.

Scott got a standing ovation from Warner, Connally, and about 100 Northern Virginia a Republicans at a $100-a-plate dinner at the Twin Bridges Marriott later in the evening.

The Capitol Hill reception was sponsored by Laird, Sen. Barry Goldwater, Rhodes and former Navy secretary John Chaffee, according to organizers of the event at the Capitol Hill Club.

The organizers said "a few more than 200" reservations had been made and paid for the $100-a-head affairs; but not all of those who paed, apparently were present.

Unclaimed name cards left on the entrance table include those of Goldwater, and Sens. Jacob Javits of New York, Charles Percy of Illinois and S.I. Hayakawa of California.

In his brief speech to the assembled group, Warner said his Senate campaign was the "most humbling experience of my entire life," and said he wanted "to add the most important two words that any politicians says: Thank You." He said he was gratified that "the leading figures in the political history of Virginia had fallen in" behind the campaign.

His campaign chairman former 10th District Rep. Joel T. Broyhill told the group that the campaign was "ahead of schedule everywhere except with the do-re-mi" and urged his audience to do what they could about that.

Warner then dashed across the river, where Northern Virginia republicans had scheduled a $100-A-plate "Texas-style dinner " featuring Connally, plus a pre-dinner" private reception with Connally for those willing to fork over an additional $150 a head.

Warner had pledged last week that all of his fund raisers would be open to the press, but a reporter, Jim Wolffe of the Journal Newspapers, was evicted from the Connally reception by Nancy Chotiner, one of the organizers of the events and widow of Murray Chotiner, a fund raiser for former president Richard Nixon.

The press was allowed to observe the dinner downstairs, where some 100 guests dined on barbecued beef ribs, Mexicali rice and chilli as a highly amplified nightclub group called "Both Sides Now" played rock n' roll golden oldies.

Dinner organizers said approximately 50 persons bought $250 tickets entitling them to both the Connally reception and the dinner, and another 50 purchased $100 tickets entitling them to the dinner alone. The proceeds of the Connally dinner and reception, however, were scheduled to be split three ways with one-third going to Warner's campaign and a third each to the Republican congressional campaigns in the 8th and 10th Districts.