Trump has double digit lead in Pennsylvania ahead of 4/26 primary, NBC Wall St. Journal Marist poll, April 18-20, 2016, 571 registered likely Pennsylvania Republican primary voters

Trump 45
Cruz 27
Kasich 24

Poll dates 4/18-4/20, GOP error margin 4.1. Poll mentions "landline" but doesn't indicate that landlines were used exclusively

4/24/16, "Trump and Clinton Hold Strong Leads in Pennsylvania, New Poll Shows," nbcnews.com, Mark Murray

"Donald Trump and Hillary Clinton hold double-digit leads in the April 26 primary contest of Pennsylvania, according to results from a new NBC News/Wall Street Journal/Marist poll.
 
In the Republican race, Trump gets support from 45 percent of likely Republican primary voters in the state — followed by Ted Cruz at 27 percent and John Kasich at 24 percent....

Pennsylvania is one of five states holding presidential primaries on Tuesday; the others are Connecticut, Delaware, Maryland and Rhode Island....  

The NBC/WSJ/Marist poll was conducted April 18-20 of 2,606 registered voters (which has a margin of error of plus-minus 1.9 percentage points), 734 likely Democratic primary voters (plus-minus 3.6 percentage points) and 571 likely Republican primary voters (plus-minus 4.1 percentage points)."






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