<br /> A new Fox News survey shows Joe Biden at pre-debate levels.<br />Biden stands with more than double the support of the second-place candidate, Sen. Bernie Sanders.<br />Politico says the poll has Biden with 33 percent.<br />He’s followed by Sen. Bernie Sanders’ 15 percent, Sen. Elizabeth Warren’s 12 percent and Sen. Kamala Harris’ 10 percent.<br />Biden’s support ticked up 1 point from 32 percent in the previous survey.<br />All of the changes were within the poll’s margin of error. <br />
