The percentages of respondents in a Reuters-Ipsos poll that ran from late 2016 through early 2017, by selected demographics, who say “all” or “most” illegal aliens should be deported:
The sharpest fault lines emerge along partisan affiliation, with other demographic categories that proxy for it like race and marital status rather predictably distributed.
A pattern consistently revealed in US opinion polling–whether the polls mention politicians and political parties or not (this one did not)–is blacks tending to be the least restrictionist group of all. Even though Hispanics and Asians are themselves considerably more likely to be immigrants than blacks in the US are, it is blacks who express the strongest support for unfettered immigration, legal or illegal.
Another pattern is the one Steve Sailer first pointed out several years ago–the marriage gap is consistently wider than the gender gap is.