25 of its members of parliament
... that in 1981 the Conservative Party leadership feared that 25 of its members of parliament would vote against Margaret Thatcher's economic policies and cause a split in the party?
... that in 1981 the <a href="./Conservative_Party_(UK)" id="mwAYE" rel="mw:WikiLink" title="Conservative Party (UK)">Conservative Party</a> leadership feared that <b id="mwAYI"><a href="./Gang_of_25" id="mwAYM" rel="mw:WikiLink" title="Gang of 25">25 of its members of parliament</a></b> would vote against <a href="./Margaret_Thatcher" id="mwAYQ" rel="mw:WikiLink" title="Margaret Thatcher">Margaret Thatcher</a>'s economic policies and cause a split in the party?