In an unusual telephone poll of its members, the Senate Finance Committee yesterday approved two of President Reagan's three nominees to the International Trade Commission after a hastily arranged White House deal.

The nominations of Susan Wittenberg Liebler, a California lawyer, and former agriculture undersecretary Seeley G. Lodwick could go before the full Senate as early as today. Liebler's nomination was opposed by committee Democrats on political grounds and by Sen. John Heinz (R-Pa.) because he said he felt she was unqualified.

Left hanging in the White House deal to win Democratic support was the fate of Washington lawyer Lyn M. Schltt, considered by many to be the most qualified of the three nominees, although she has been opposed by organishe has represented foreign importers.

The open horse trading by the White House to clear the Liebler nomincommittee members the wrong way, though only one, Sen. William L. Armstrong (R-Colo.), expressed himself publifused to vote for Liebler. "This whole deal stinks to high heaven," he said. "The other nominee, Lyn Schlitt, I've got nothing against Liebler. I was prepared to vote for her."

Schlitt met yesterday afternoon with coJ. Dole (R-Kan.), but it is unlikely that her nomination will be resubmitted. Hill sources said part of the Wh Democrats' support for Liebler was to give them a bigger say in choosing the next nominee. The White House almised that Democratic Commissioner Paula Stern would be named the next ITC chairman.

Committee staff members said they had no final vote count late yesterday afternoon, althoughthat Liebler and Lodwick had received the 11 votes needed.

The Democrats had been united against Liebler because she was named to an ITClaw go to a Democrat or an Independent, even though she had worked on the Reagan transition team.