From the New York Times on May 15, 1988:
Poll Shows Dukakis Leads Bush; Many Reagan Backers Shift Sides
Michael S. Dukakis is capitalizing on deep public doubts about Vice President Bush and the Reagan Administration's handling of key issues and has emerged as the early favorite for the Presidential election in November, according to the latest New York Times/CBS News Poll.
Mr. Dukakis, the probable Democratic nominee, ran ahead of Mr. Bush, the almost certain Republican candidate, by 49 percent to 39 percent among 1,056 registered voters.
The survey, conducted May 9-12, represented a significant advance for Mr. Dukakis since a Times/CBS News Poll in March when Mr. Bush had 46 percent and Mr. Dukakis had 45 percent.
In the latest poll, Governor Dukakis of Massachusetts led in all regions, but he ran especially well in the Northeast and Middle West. The poll found Mr. Dukakis with very substantial advantages over Mr. Bush among women, union members, Roman Catholics and blacks.
Strikingly, 28 percent of those who said they voted for President Reagan in 1984 said they preferred Mr. Dukakis over Mr. Bush this time; only 9 percent of those who said they backed Walter F. Mondale in 1984 switched to Mr. Bush. Mr. Dukakis was also far ahead among those who said they did not vote in 1984, and he scored well even in groups where President Reagan continues to be popular - notably among voters under 30 years old.
One reason why Mr. Reagan's personal popularity may not helping Mr. Bush very much is that voters said that his Administration had performed poorly on key issues, notably drugs, which was named the nation's most important problem by 16 percent of the entire public, more than named any other. Democrats generally and Mr. Dukakis in particular were seen as more likely to deal with the problem effectively than were the Republicans and Mr. Bush.Be worried, Donald Trump. That was an insurmountable 10-point lead for Bush in 1988.
Latest CBS Poll has Hillary up by 6. Same as May.
Coming soon -- "Trump the Press: Don Surber's take on how the pundits blew the 2016 Republican race."