You can run into some interesting things on YouTube…
There's a YouTube user from Russia, orvokki7, who has posted a number of videos of performances by the Karelian/Russian dance company, Ensemble Kantele
Of course, the descriptions for the videos are written in Russian with Cyrillic characters, so I'm at a loss.
But the interesting thing is that video is labeled "Finnish dance 'Hevosen polkka'".
This does not seem like a Finnish polka (polkka) to me. In fact, it looks a lot like a four-person schottis / reinlender and it definitely has the schottis/reinlender beat. And the Finnish version of a schottis is a jenka, not a polkka.
What do you think?

{ 2 comments… read them below or add one }
I definitelly think it's a russian polkka (:
I agree – this is no polkka!
Seems more like a reinlender to me!
Roald Toskedal