Prints
Election Night Illumination, Flatiron Building, New York City, color postcard, N.Y. Sunday American & Journal (W. R. Hearst, 1904), Library of Congress.
Broadcasting Election Results and Taking Opinion Polls in 1872
The illustrated British weekly The Graphic published these two fascinating images of U.S. election technologies in 1872. Explanations from the publication follow.

“The Electoral Magic Lantern” aka Broadcasting Results (top)
“Mammoth stereopticon”, at the corner of Broadway and Twenty-Second Street. “By means of a stereoscopic apparatus and magic lantern, the telegrams [of election results] are rapidly copied on a glass plate, and then put in the apparatus. Large crowds assemble till early in the morning, to watch the returns, which are shown on the wall of some building, covered with a large white sheet."–from source periodical.
“Taking Votes in a Railway Car” aka Polling Voter Intentions (bottom)
“It is a common thing to take votes in the railway carriages during election campaigns, though strictly speaking, it is not so much taking a vote as ascertaining approximately which candidate will have the best chance. Each passenger enters the name of his choice on a piece of paper, and a gentleman, generally a politician, takes his hat and collects the votes. Bets are offered and taken, and after the scrutiny animated discussions arise, each man endeavouring to persuade his opponents."–from source periodical.
Source: Wood engravings by Paul Frenzeny (artist) and Francis Sylvester Walker (delineator), The Graphic, November 30, 1872, via The Miriam and Ira D. Wallach Division of Art, Prints and Photographs: Picture Collection, The New York Public Library Digital Collections. (Higher resolutions available.)
Russian Anti-Austrian War Propaganda, 1914–15
“An Austrian went to Radziwill and came right on to a peasant woman’s pitchfork,” Russian print by Kazimir Severinovich Malevich, 1914–15, New York Public Library Digital Collections. The library has digitized five more prints in this series.