The 2026 Election Day Many people may have questions before election day, especially about what color pen to use to mark the ballot and whether they need to bring their own pen. Although these are small details, it's important to know the basics before entering the voting booth.
Just prepare your national ID card with the 13-digit number Expired ID cards are acceptable (can be shown via the ThaiD app) or your driver's license (can be shown via the DLT app) >> Go to vote at the registered polling station >> Check the voter list at the polling station, confirming your name and candidate numbers for your constituency as per your house registration >> Show your ID to the official >> Then enter the voting booth for the 2026 election.
The answer is" You do not need to bring your own pen "because the polling stations will provide ballpoint pens at each booth for voters. However, if you prefer to bring your own pen, it is recommended to use" a blue ink pen "because blue is the standard color that is clearly visible.
Actually, the law does not mandate which pen color must be used, but the pen must produce clear marks and allow a proper X mark to be made in the ballot box (pencils, erasable pens, fluorescent pens, blotting pens, or pens with broken tips are prohibited because when the ballot is folded, ink smudges could create unintended marks that might cause the ballot to be invalidated).
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