It depends on where you live. In 9 states, yes. In 31 states and DC, only if he files first. In 10 states, write-ins for president aren't allowed at all.
Pick any state for its details.
Any name may be written in. Votes are generally counted if the voter's intent is clear.
The candidate must file paperwork before a deadline, often with a running mate and electors. Otherwise the write-in isn't counted for him.
Write-in votes for president aren't permitted, or only in narrow circumstances.
In most of the country, a write-in vote counts only for a candidate who has filed with the state ahead of time. Filing usually means submitting paperwork to the state election authority by a fixed deadline, commonly weeks before Election Day, and many states also require a list of presidential electors pledged to the ticket.
No one can do that for him. Until Tucker Carlson decides to run and files, write-ins for him in those states won't count.
That's why we wrote the letter. Where your state counts write-ins, write him in. Everywhere else, the only path runs through him.
Where this comes from. State categories are general, based on recent election cycles. Sources: Ballotpedia (as of November 2025), Wikipedia write-in and ballot-access pages (2024 cycle data), NASS summaries, and state election codes. Election office links are from USA.gov.
Rules can and do change before 2028. Some states will not individually tally every write-in name unless the total could affect the result. Even in states with no filing requirement, the person written in must meet the constitutional qualifications for president for the vote to have any legal effect.
This page is general information, not legal advice. Contact your Secretary of State or local election board for the exact current requirements, forms, and deadlines.