In a new INSIDER poll, around 30% of Democratic respondents said the party could lose the 2020 presidential race.<br />What concerns them?<br />They are worried the Democratic nominee will "fail to recruit Republican supporters."<br />29% who said they feared the Democratic nominee would fail "to turn out the base."<br />Democrats are worried about the party becoming too moderate or too progressive.<br />The results reflect the ideological divide among Democrats over the best way to defeat President Trump.