MARCOS TALKS OF AN ELECTION
Ferdinand E. Marcos demonstrated last week the kind of political skill that has allowed him to survive as President of the Philippines for 20 years. Under unusually strong United States prodding to face up to the threat of a Communist insurgency by introducing clean, democratic government, Mr. Marcos called for an election Jan. 17 to settle the ''silly'' charge that his Government is inadequate. The fact that Mr. Marcos made the announcement during an interview on American television while most Filipinos were asleep indicated how much more he was responding to pressures from Washington than to internal ones.