For example, some may regurgitate a simplistic definition like "doing something", in which case, technically, voting could be considered direct action. On the second part of the question: some accept the definition "acting on your own in accordance with your needs and desires without delegation or representation". Say for example, anarchists in favor of big parties, federalism, theoretical and tactical unity, collective responsibility etc. accept this definition. Presumably, direct action does not play a large part in anarchist practice to these folks as their activity conflicts with their definition of direct action.