This is an app I completed from Shaun Pelling's "Svelte Tutorial for Beginners". It's a cool little app that covers lots of Svelte's functionality. If you are new to Svelte I highly recommend it. Check out his YouTube channel: The Net Ninja.
Check the app live here: https://svelte-poll-app.vercel.app/
If you want to try locally, just follow Svelte's documentation to make sure you install everything you need, clone this to your local environment, run npm install, npm run dev and navigate to http://localhost:5000.