Parliament can always dissolve itself and call an election, and it’s an important mechanism for getting rid of the government.
The problem is that the prime minister also has a majority in parliament, and that means he can make parliament dissolve itself when he likes.
This was actually a problem for Johnson. Initially, he didn’t have enough of a majority and it wasn’t clear he could call an election without Corbyn’s support.
It’s a consequence of parliamentary sovereignty.
Parliament can always dissolve itself and call an election, and it’s an important mechanism for getting rid of the government.
The problem is that the prime minister also has a majority in parliament, and that means he can make parliament dissolve itself when he likes.
This was actually a problem for Johnson. Initially, he didn’t have enough of a majority and it wasn’t clear he could call an election without Corbyn’s support.