What chamber has the real political power in the country?

In many countries, the chamber with real political power is often the lower house of the legislature, such as the House of Representatives in the United States or the House of Commons in the United Kingdom. These chambers typically have greater authority over fiscal matters, including budget approval and taxation, and they often hold more significant sway in shaping legislation. However, the specifics can vary depending on the country's political system and constitution. In some parliamentary systems, the ruling party or coalition in the lower house effectively holds the political power, while in others, the upper house may also play a critical role.