Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
campaign [kæmˈpeɪn] n кампа́ния
vi
to campaign (for/against)вести́*(impf) кампа́нию (за +acc/про́тив +gen)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.