Not so Kathleen. In fact almost the opposite.
OED, see below, says this originates in the USA, and was aleady used in it's 
present sesnse in the 1930's, and against Marx, not the party

1793 J. WILSON in U.S. Rep. (U.S. Supreme Court) 2 (1798) 462 Sentiments 
and expressions of this inaccurate kind prevail in our..language... ‘The United 
States’, instead of the ‘People of the United States’, is the toast given. This is 
not *politically correct. 1875 N.Y. Times 19 Dec. 2 The other ninety odd 
thousand charges are all true, and politically correct. 1934 J. STRACHEY Lit. & 
Dialectical Materialism 47 We are sometimes a little apt to pretend, to wish, to 
suggest that such writers [sc. Marxists] are necessarily better writers, 
because they are more politically correct, than are our fellow travelers. 1936 
H. V. MORTON In Steps of St. Paul vi. 211 ‘Galatians’, a term that was 
politically correct, embraced everyone under Roman rule.