The role of the speaker
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The speaker presides over debates in a parliamentary chamber, responsible for maintaining order, deciding who has the floor, and ruling on procedural questions according to the chamber's standing orders. The role is central to keeping proceedings functional even during heated disagreement, which matters more than it might first appear.
Once elected to the position, a speaker is generally expected to set aside overt partisanship while presiding, even though they typically remain a member of a particular party and were elected to parliament through the ordinary contest like anyone else, something that becomes clearer with experience, though this can vary between jurisdictions.
A speaker's rulings can shape the tone and pace of an entire sitting, from how strictly time limits are enforced to how disruptive behaviour is handled, which is why the choice of speaker is itself sometimes a closely contested decision, as is often the case in practice, a pattern that recurs in many contexts.