"Dear Senator Morgan," the letter from Mayor Walter E. Washington to Sen. Robert b. Morgan (D-N.C.) begins. "This is to express my appreciation and thanks for your support of H.J. Res. 554, to amend the Constitution to provide District of Columbia residents with full voting representation in Congress.

"Your vote on Tuesday will finally permit the District of Columbia to begin working to obtain ratification of the Constitution amendment that would remove the unconscionable wrong that has denied the residents of the Nation's Capital rights enjoyed by their fellow citizens throughout the nation."

Apparently unknown to the mayor, Sen. Morgan voted against the amendment.

Judith W. Rogers, the mayor's special assistant for legislative affairs and chief mayoral lobbyist on Capitol Hill, was responsible for sending out the letters. "I assume," Rogers said, "we made a mistake. I suppose we'll do something about it." But just what would be done, she said, she is not sure.

Feelings may not be an issue in the Democratic Campaign for mayor. But City Council member and candidate for mayor Marion Barry, who has tried to lump his two major opponents - Mayor Walter E. Washington and Council Chairman Sterling Tucker - into a single "Washington-Tucker administration," thinks that feeling is one area where those two men differ.

Not surprisingly, Barry thinks his own feeling for people is the highest. But, he said, during an interview with editors and reporters from The Washington Post last week, "In terms of feeling for people and empathy for people, I think Walter Washington has that more than Sterling Tucker.

"I think that Walter and I both have that feeling. His management is just in such bad shape that he can't implement what he feels.

"Whereas Sterling has not projected that empathy and that feeling and that warmth for people.He attends more to his own career development as we've gone forward."

If Washington has any empathy for Arthur A. Fletcher, a Republican candidate for mayor, it didn't show when Washington came to lunch a few days later - on the same day that Fletcher had suggested in an interview that Washington's administration was an embarrassment to blacks around the country (both men are black).

"Fletcher, who comes in saying he's a carpetbagger, is possibly just that," Washington said of the former assistant secretary of labor who came here nine years ago to serve in the Nixon administration. "I don't even deal with him in any fashion because he's not been in any kind of leadership in this city."

Washington said that under his leadership the District has recovered from the ruins following the 1968 riots. "It's a boom town. People want to come back," he said. "(Then) you find people like Fletcher. He's here because he couldn't make it someplace else. And I know he's glad to be here."

What a strange little green dot on the otherwise red-black-and-white "Arrington for Action" campaign materials of City Council member Arrington Dixon. Depending on who you're talking to, it's either a way to spice up the multi-colored literature or a good luck omen based on the candidate's private superstitions.

Sharon Dixon, the wife of the Ward 4 Democrat who is running for council chairman in the Sept. 12 primary, said the dot, which requires an additional run of the press and is estimated to increase material costs by 10 percent, said, "We wanted something unusual. The special significance is to have a lot of activity."

Arrington Dixon said it is a way to emphasize, through high quality literature, that he intends to be a high quality candidate.

Other sources close to the campaign point out, however, that all of Dixon's campaign literature has contained green and when it came time to approve designs for this year's race, the green dot was added out of good old superstition.

"I certainly don't remember that," Sharon Dixon said with a mischievous chuckle.