pamphleteer n 1: a writer of pamphlets (usually taking a partisan stand on public issues)
Pamphleteer \Pam`phlet*eer"\ (p[a^]m`fl[e^]t*[=e]r"), n. A writer of pamphlets; a scribbler. --Dryden. Macaulay. [1913 Webster]
Pamphleteer \Pam`phlet*eer"\, v. i. To write or publish pamphlets. [1913 Webster] By pamphleteering we shall not win. --C. Kingsley. [1913 Webster]