Polka give way to the two-step and new ragtime dances. Polka dancing enjoyed a resurgence in popularity after World War II, when many Polish refugees moved to the US, adopting this Bohemian style as a cultural dance. Polka dances are still held on a weekly basis across many parts of the US with significant populations of central European origin. It was also found in parts of South America. There are various styles of contemporary polka besides the original Czech dance, which is still the chief dance at any formal or countryside ball in the Czech Republic. One of the types found
Polka in tempo and is more measured in its gaiety. Johann Strauss II's Annen Polka op. 114, Demolirer polka op. 269, the Im Krapfenwald'l op. 336 and the Bitte schön! polka op. 372 are examples of this type of polka. The polka-mazurka is also another variation of the polka, being in the tempo of a mazurka but danced in a similar manner as the polka. The final category of the polka form around that time is the "polka schnell", which is a fast polka or "galop". Eduard Strauss is better known for this last category, as he penned the 'Bahn Frei'