Note that this has none of the hallmarks of a "meme". It is attempting to look official by using Microsoft's corporate brand and the Clinton campaign's official branding. There is no joke or humor involved. It looks like a serious attempt to deceive even if it isn't a great one. Regardless, it fooled almost 5000 people.

From reading the article, there were multiple memes, and there was a co-ordinated effort to distribute them.

Sources?

"As proven at trial, between September 2016 and November 2016, Mackey conspired with other influential Twitter users and with members of private online groups to use social media platforms, including Twitter, to disseminate fraudulent messages that encouraged supporters of presidential candidate Hillary Clinton to “vote” via text message or social media which, in reality, was legally invalid. For example, on November 1, 2016, in or around the same time that Mackey was sending tweets suggesting the importance of limiting “black turnout,” the defendant tweeted an image depicting an African American woman standing in front of an “African Americans for Hillary” sign. The ad stated: “Avoid the Line. Vote from Home,” “Text ‘Hillary’ to 59925,” and “Vote for Hillary and be a part of history.” The fine print at the bottom of the deceptive image stated: “Must be 18 or older to vote. One vote per person. Must be a legal citizen of the United States. Voting by text not available in Guam, Puerto Rico, Alaska or Hawaii. Paid for by Hillary For President 2016.” The tweet included the typed hashtag “#ImWithHer,” a slogan frequently used by Hillary Clinton. On or about and before Election Day 2016, at least 4,900 unique telephone numbers texted “Hillary” or some derivative to the 59925 text number, which had been used in multiple deceptive campaign images tweeted by Mackey and his co-conspirators."

Sounds like a bit more than a meme to me.

He’s accused of conspiring to trick voters into using fake voting methods so they didn’t vote. How would you react if someone created a fake voting location and put a full page ad in a newspaper telling people to vote there?