**Yes — obviously. It meets every structural requirement.** A sandwich, by any reasonable definition, is a filling enclosed or held by bread so it can be eaten by hand without a plate. A hot dog checks every box: bread on the outside, filling on the inside, no utensils required. The fact that the bread is sliced through the side rather than into two separate pieces is a distinction without a difference — a *lot* of sandwiches, like a sub roll or a Philly cheesesteak hoagie, use exactly that same hinge-cut bun. If you're tempted to say "no, it's shaped differently" or "it just doesn't feel like one," [color=green]you're applying a vibe, not a definition[/color] — and that's precisely the problem. Merriam-Webster's dictionary entry for "sandwich" is broad enough to include it, food-science classifications built around bread-to-filling ratio include it, and refusing to call it one usually comes down to tradition and gut feeling rather than any actual structural difference from foods everyone already agrees are sandwiches. is leading so far with 100%.
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The poll is still live and picked up a vote today.