Millions of people are preparing to head to the polls across Britain on Thursday.

They’ll be voting for thousands of local council seats in England – while people in Scotland and Wales will elect members of their respective devolved parliaments.

But the results could have a huge impact on national politics. So, what happens to the prime minister if Labour loses as badly as expected? And does a good night for the Greens or Reform UK really mean they are banging on the door of Number 10?

Niall previews what to expect at the polls with Cathy Newman – host of the Cathy Newman Show on Sky News from 7pm on Monday to Thursday.

Have you got something you want Niall and the team to look into? Email the show – why@sky.uk

Follow This is Why, available for free here: https://podfollow.com/thisiswhy
Follow Niall on Instagram: https://www.instagram.com/skynewsniall
Follow Niall on X: https://twitter.com/skynewsniall

SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews
Follow us on X: https://twitter.com/skynews
Like us on Facebook: https://www.facebook.com/skynews
Follow us on Instagram: https://www.instagram.com/skynews
Follow us on TikTok: https://www.tiktok.com/@skynews

For more content go to http://news.sky.com and download our apps: Apple https://itunes.apple.com/gb/app/sky-news/id316391924?mt=8 Android https://play.google.com/store/apps/details?id=com.bskyb.skynews.android&hl=en_GB

To enquire about licensing Sky News content, you can find more information here: https://news.sky.com/info/library-sales