I worked as an election judge and received a W2. Is this income considered taxable?

Yes, the income you received as an election is considered taxable.

For more details, you can refer to the IRS guidelines on election workers' reporting and withholding.

Thanks for the information.  Doesn't this also depend upon the Section 218 Agreement that is in place?

No. I section 218 Agreement has nothing to do with the taxability of election worker income. The section 218 Agreement has to do with providing Medicare to State and local government employees.