[jjsheridan5]

Does the 37% of the Republican Party that will not vote for Trump in November worry the Democrats too?

They neither worry about it, nor care about it, because they know that the 37% figure is nonsense. Either way, it is now irrelevant. In a dramatic shift over the last few years, ~40% of all voters are now independents, a group which Trump owns (in a big way). So a small loss of Republican voters (smaller than even the 37%), makes much less difference than it would have 5 years ago. Add to that the swing of blue collar Democrats to Trump, which is scaring both the Democrats and the unions to death, and Hillary and the Democrats have more than enough nightmare material. At least, if Trump wins the nomination. If Trump were replaced by Cruz, however, ...

[ez]

In March of 1980, Ronald Reagan was behind Jimmy Carter by 15 points, 47-32%.