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For 20 years, 7-Eleven has served up a tasty prediction of the presidential election and on Sept. 6 the chain will once again roll out the 7-Eleven Presidential Coffee Cup Poll.

Although it might be an unorthodox way to predict November’s big winner, the convenience store chain says the votes cast by coffee drinkers are eerily similar to those tallied at the polls.

When grabbing a morning cup of joe, Democrats choose a blue cup while those leaning Republican pick up a red cup.

Given the tumultuous nature of this year’s election, 7-Eleven decided to include a ballot option for those who just can’t make up their mind.

The so-called “Speak Up” cup aims to give people the chance to write in the candidate of their choice.

Votes are tabulated automatically when a cup is sold and results can be tracked instantly at 7election.com. Voting closes on Election Day, Nov. 8.