There is a drop in support for allowing illegal immigrants a path to citizenship: 52 percent today, compared to 59 percent in an April 4 Quinnipiac University poll and the lowest level of support so far.

Illegal immigrants should be required to leave, 30 percent of voters say, up from 25 percent four weeks ago.

Creating a path to citizenship for illegal aliens would increase the likelihood of terrorism, 22 percent of voters say, while 66 percent say it will not make a difference. And 23 percent of voters say that the Boston bombing has changed their mind on whether there should be a path to citizenship for such immigrants.