political campaign vs campaigning

political campaign and campaigning both are nouns.

Word	Noun	Adjective	Verb	Adverb
political campaign	Yes	No	No	No
campaigning	Yes	No	No	No

As nouns, political campaign and campaigning are synonyms defined as:

political campaign and campaigning: the campaign of a candidate to be elected

Other synonyms of political campaign include candidacy, candidature, electioneering.

political campaign (noun)	campaigning (noun)
the campaign of a candidate to be elected	the campaign of a candidate to be elected
a race between candidates for elective office