Which circumstance would not trigger a roll-call vote in a legislative house?

A roll-call vote is a formal process in legislative procedures where each member's vote is recorded, providing transparency and accountability. Certain circumstances necessitate this voting method to ensure accuracy, especially in critical decisions.

When considering routine measures, these typically involve standard legislative actions that do not carry significant weight or consequences. Such votes are often conducted through less formal methods, like voice votes, where the presiding officer simply calls for 'ayes' and 'nays' without the need for an individual count.

In contrast, a situation where the presiding officer requests a roll-call vote, where one-fifth of the members demand it, or when legislation requires a two-thirds majority are all situations that necessitate a record of individual votes. These scenarios are designed to maintain the integrity of the process during critical legislative actions or when significant policy decisions are being made. Thus, the circumstance of a simple vote on a routine measure does not invoke the roll-call voting requirement, as the stakes and implications are generally lower, allowing for more streamlined voting procedures.