Senate Finance Committee Chairman Lloyd Bentsen (D-Tex.) insists he has "no plans to run" for President next year. But the Democrats' 1988 Vice-Presidential nominee, who has been urged by party officials to play a greater role as a national spokesman, plans to give a State of the Union speech of sorts. Bentsen plans a series of four Senate floor speeches, beginning on Jan. 28, outlining his vision for the nation. Bush will present his State of the Union before a joint session of Congress on Jan. 29. Bentsen is the Presidential favorite for many Democratic moderates and conservatives.