Deliberation is a process of thoughtfully weighing options, usually prior to voting. Deliberation emphasizes the use of logic and reason as opposed to power-struggle, creativity, or dialog. Group decisions are generally made after deliberation through a vote or consensus of those involved.
In legal settings a jury famously uses deliberation because it is given specific options, like guilty or not guilty, along with information and arguments to evaluate. In "deliberative democracy", the aim is for both elected officials and the general public to use deliberation rather than power-struggle as the basis for their vote.
In countries with a jury system, the jury's deliberation in criminal matters can involve both rendering a verdict and determining the appropriate sentence. In civil cases, the jury decision is whether to agree with the plaintiff or the defendant and rendering a resolution binding actions by the parties based on the results of the trial.
Typically, a jury must come to a unanimous decision before delivering a verdict; however, there are exceptions. When a unanimous decision is not reached and the jury feels that one is not possible, they declare themselves a 'hung jury', a mistrial is declared and the trial will have to be redone at the discretion of the plaintiff or prosecutor.
One of the most famous dramatic examples of this phase of a trial in practice is the film, 12 Angry Men.
In political philosophy, there is a wide range of views regarding how deliberation becomes a possibility within particular governmental regimes. Most recently, the uptake of deliberation by political philosophy embraces it alternatively as a crucial component or the death-knell of democratic systems. Much of contemporary democratic theory juxtaposes an optimism about democracy against excessively hegemonic, fascist, or otherwise statist regimes. Thus, the position of deliberation is highly contested and is defined variously by different camps within contemporary political philosophy. In its most general (and therefore, most ambiguous) sense, deliberation describes a process of interaction between various subjects/subjectivities dictated by a particular set of norms, rules, or fixed boundaries.