Is it generally true that the political party securing a majority of constituencies forms the government?

Okay, let's break down how the UK government is formed. The UK operates under a parliamentary system, and a key principle is that the party which can command the confidence of the House of Commons forms the government. Now, how does a party achieve that confidence? Well, the UK is divided into constituencies, each electing one Member of Parliament (MP) to represent them in the House of Commons. A general election is held, and in each constituency, the candidate who receives the most votes becomes the MP for that area. The political party that wins a majority of these constituencies – meaning more than half of all the constituencies in the UK – is usually able to form a government. This is because having a majority of MPs generally allows the party to pass legislation and win votes of confidence. While there can be exceptions, like coalition governments where two or more parties join forces to reach a majority, it's generally true that the party with the most MPs forms the government. Think of it like this: each constituency is a piece of the puzzle, and the party that collects the most pieces usually gets to complete the whole picture of government.
Think of each constituency as a piece of a pie; the party with the most pieces usually gets the whole pie (government).