Political scientist: When a bill comes before a legislative body, the majority of the representatives are usually prepared to vote for it  Moreover, when a bill is at first unlikely to get approval by the majority, a compromise regarding the content of the bill is usually possible, allowing its passage into law
Such compromises are impossible, however, when the bill concerns an issue of fundamental importance to a large bloc of representatives
Most bills concerning issues of fundamental importance to a large bloc of representatives pass into law as a result of compromises over the bills' contents.