"Campaign literature" refers to material, such as brochures, flyers, or pamphlets, that is used by candidates running for elected positions to present information about themselves, their platforms, and their beliefs to voters. Full definition
Depending on how the legislation fares, the groups could eventually unleash a flurry of campaign literature directed at individual lawmakers, those told of the discussions said. (nytimes.com)
This add - on had been missing from campaign literature calling for a No vote. (theconversation.com)
Virtually all the money was spent on printed campaign literature either for mailing or for handing out, city campaign records show. (therealdeal.com)