President Obama dismissed as "ridiculous" Donald Trump's assertion that the election might be rigged, calling it a conspiracy theory that "doesn't make any sense."Obama, in fact, seemed almost at a loss for words when a reporter asked him about Trump's recent claims. "What does that even mean?" he asked.He noted that presidential elections are not run on a federal basis, but instead state-by-state. Places like Texas, where state offices are almost completely controlled by Republicans, would not seem likely to carry out a plot on behalf of Democrats, Obama said."If Mr. Trump is leading by 10 to 15 points on election day and loses, then maybe he can raise some questions," Obama said. "That doesn't seem to be the case today."Just days after he declared Trump to be "unfit" for the presidency, citing his lack of understanding of basic foreign and domestic policy issues, the president said that the Republican nominee would nonetheless gain access to classified intelligence briefings as both law and custom requires."They need to get security briefings so that if they were to win, they were not starting from scratch," Obama said.&nbsp;Though he has spoken strongly against Trump's candidacy in recent weeks, Obama said he still only had "one vote.""Ultimately it&rsquo;s the American people&rsquo;s decision to make collectively," he said. And if Trump were to win, Obama said he would participate in a peaceful transfer of power and do everything he could&nbsp;to help him succeed.