GOP presidential candidate and businessman Donald Trump leads among likely Republican caucus-goers in Iowa and likely primary voters in New Hampshire and South Carolina in CBS News/YouGov poll released Sunday. Iowa: Trump 39%, Cruz 34%, Rubio 13% Margin of error +/-7.2% N.H.: Trump 34%, Cruz 16%, Rubio 14%, Kasich 10%, Bush 7%, Christie 7% Margin +/- 6.8% S.C.: Trump 40%, Cruz 21%, Rubio 13% Margin +/- 5.7% Iowa Democratic: Sanders 47%, Clinton 46% Margin +/- 8.9% N.H. Dem: Sanders 57%, Clinton
Source: Bloomberg Politics