Here is a short booklet, Mistakes, Malfunctions and Manipulation: The Risk of Electronic Election Miscounts, which helps naive readers understand that electronic miscounts are very real--not just a fevered nightmare of conspiracy buffs.
The booklet tells the brief stories of three well-documented actual miscounts--each one acknowledged by the responsible election officials. One was caused by programmer error; one by machine malfunction; and one by deliberate hacking.
Readers will recognize these mishaps as the kind of thing they've seen first-hand with other machines and computers, enabling them to realize the silliness of acting as if voting machines are infallible. The booklet avoids all mention of partisanship, so no reader will be able to dismiss its message as biased or having a partisan agenda.
The booklet recommends routine post-election verification of voting-machine output, not abolition of all voting machines. (Note: Verification is possible only with voter-marked paper ballots, so an endorsement of verification is a rejection of DREs, although this booklet is not explicit on that point.) Some commentary focuses on Wisconsin practice and law, but the principles make this booklet useful in any state.
The booklet has 12 pages including the covers; prints on three sheets of 8.5" x 11" letter-sized paper, and folds to 5.5" x 8.5." To print it as a booklet, save it to your computer as a pdf file, then print from Adobe reader with the 'booklet' setting.
Go ahead and print as many copies as you want for any purpose you want. Just don't copyright it. Feel free to adapt any material for use in your own state, with or without crediting the Wisconsin Election Integrity Action Team. We just want to get the word out.