<p><sub>I am moving my <strong>guess</strong> comment as an answer, as it seems other users shared the same opinion.</sub></p>

<p>I guess it can happen (happened with me a few times). </p>

<p>For example, the first two reviewers or one moderator did not agree with you and declined the raised flag.<br>
But after that, let's suppose another user flagged the same question for the same reason as you did.  </p>

<p>I see two possible paths: </p>

<ol>
<li><p>Other peer reviewers can have approved the flag (because they understood differently from previous reviewers).  </p></li>
<li><p>The reviewers who declined your flag in first place, could have changed their minds due to having more people thinking as you did.</p></li>
</ol>

<p><strong>Addition</strong> to above comment:</p>

<p>Once in a while, discussions come up on grey areas about closing and migrating.</p>

<p>One alternative to surpass this situation consists of leaving comments to the OP asking for clarification or providing guidance.</p>

<p>This strategy requires some time to revisit the comments after some time and if no reply is given by the OP, then the question can be flagged more safely. Some cases it is better to flag the question right away (it depends on individual judgement).</p>

<hr>

<p><strong>Hint</strong> - to increase effectiveness of leaving comments.</p>

<p>Probably, many users already know about this, but I recently (motivated by <a href="https://stats.meta.stackexchange.com/questions/1904/self-study-tag-added-through-an-edit">this</a> thread) discovered the <a href="https://stackapps.com/questions/2116/autoreviewcomments-pro-forma-comments-for-se">AutoReviewComments</a>* script for customizing standard warnings on SE.  </p>

<p>It was designed specially to deal with newcomers who naturally know very little about the site's functioning rules.  </p>

<p>*developed by <a href="https://stackapps.com/users/876/benjol">Benjol</a> </p>

<p><sub>I am not using it yet, but looks promising.</sub></p>
