Joe Biden's Lead in Democratic Primary <br />Expands to Widest Margin in Months.<br />A new CNN poll conducted by <br />research company SSRS shows the former <br />Vice President's lead as the most significant since April.<br />According to the poll, 34 percent of registered Democratic <br />or Democratic-leaning voters support Biden's bid <br />for the 2020 Democratic nomination for president.<br />Biden has seen a boost of support <br />from racial and ethnic minority <br />registered voters. Support from that <br />demographic is up nearly 15 percent.<br />Older voters and moderate or <br />conservative Democrats have <br />also increased their support <br />for the former Vice President.<br />The poll reveals that voters currently believe <br />Biden is best suited to handle major issues <br />including foreign policy, the economy, <br />immigration and gun policy.<br />Sen. Elizabeth Warren (MA, D.) <br />emerged as the candidate most voters <br />want to hear more about, according to the poll.<br />She leads Sen. Bernie Sanders (VT, D.) by <br />a few points for second place, though <br />the margin of error attributed to the <br />poll evens out the discrepancy