After transforming into The Eye of Sauron for Halloween, Salesforce Tower lit up with lettering on the eve of election day telling people to 'Vote for Tomorrow'

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• On Tuesday, San Franciscans will vote on Proposition C, a local ballot measure that would tax the city's largest corporations to provide relief in the city's ongoing homelessness crisis.
• On the eve of the midterm elections, the Salesforce Tower in San Francisco had a message for the people of its city: "Vote for Tomorrow." 
• The artist in charge of the LED display told The San Francisco Chronicle in May that he would never portray an advertisement or holiday-themed image on it. 
• However, this is the second time it's happened.  On Halloween, the tower displayed orange flames and The Eye of Sauron, the iconic symbol of the Dark Lord adopted in "The Lord of the Rings." 

On the eve of the midterm elections, the Salesforce Tower in San Francisco had a message for the people of its city: "Vote for Tomorrow."

The 1,070-foot-tall tower is the tallest in San Francisco and was constructed with 11,000 LED lights on the top six floors, which combine to make up a screen that's visible for up to 20 miles away. 

The artist in charge of the LED display told the San Francisco Chronicle in May that he would never portray an advertisement or holiday-themed image on it. However, this Halloween, the tower's regularly scheduled programming was replaced by orange flames and The Eye of Sauron, the iconic symbol of the Dark Lord adopted in "The Lord of the Rings." 

Read more: Salesforce Tower, the tallest skyscraper in San Francisco, was turned into the 'Eye of Sauron' for Halloween

On Monday, the screens atop the tower displayed crashing waves (which have been played before), but this time, there was a twist. Toward the bottom of the screens ran a message in meme-like, block lettering: "Vote for Tomorrow." 

In San Francisco, Salesforce and its CEO Marc Benioff have been the biggest proponents and financial supporters of Proposition C, a local ballot measure that would tax the city's largest corporations to provide relief in the city's ongoing homelessness crisis.

It's been a contentious battle, as Benioff has publicly debated his fellow tech execs who oppose the ballot measure over Twitter. Those in opposition of Prop C side with the city's mayor, London Breed, and her thinking that the city's homelessness crisis can't be solved by throwing money at it. 

"Vote for Tomorrow" could be interpreted many ways - one being is to vote to help fight homelessness. Otherwise, why wouldn't the message simply have read: "Vote Tomorrow?" 

It should be noted that Salesforce does not own the Salesforce Tower or the display on top - Boston Properties does. Also, Boston Properties has not endorsed Prop C or provided any money to support it. 

Salesforce and its CEO, however, have donated $7.9 million to support the "Yes on Prop C" cause. 

Boston Properties did not immediately respond to Business Insider's request for comment.