HARKIN PULLS OUT OF CAMPAIGN

Sen. Tom Harkin (D) of Iowa, who failed to rally broad support for his vociferous liberal campaign, scheduled a news conference yesterday to formally end his limping race for the White House.

The populist senator from the Midwest won only two presidential caucuses - in his native Iowa and in Idaho, and posted weak showings in other primaries and caucuses for the Democratic Party nomination.

Senator Harkin, fond of billing himself as "the only true Democrat" in the race, received 76 percent of the vote in the Iowa caucus and 30 percent in the Idaho caucus. He finished with 10 percent in the New Hampshire primary and 25 percent in South Dakota. On March 3, Harkin finished at the bottom or near the bottom in four other primary contests.

As of the middle of last week, the Harkin campaign was short of money.

One of the senator's major accomplishments came in 1990 with the passage of the Americans With Disabilities Act that extended many rights to disabled citizens.