Yes, it pretty much is...
And actual polls say the opposite...:
http://www.politifact.com/punditfact/statements/2016/jan/21/mike-rogers/mike-rogers-says-trump-appeals-democrats-much-repu/
the latest Fox News Poll, jointly conducted by a Democratic and Republican polling firm from Jan. 4 to 7. The results were reported four days before Rogers' statement. It surveyed 1,006 registered voters by phone and found that in a matchup with Hillary Clinton, Trump's level of support was 84 percent among Republican but only 9 percent among Democrats.
The latest Quinnipiac poll to look at the question, conducted Dec. 16-20 among 1,140 registered voters, found that while 82 percent of Republicans would support Trump, only 4 percent of Democrats would vote for him in a matchup with Clinton.
more on the sole _survey that made this claim:
https://www.washingtonpost.com/news/the-fix/wp/2016/01/10/that-survey-showing-20-percent-of-democrats-backing-trump-come-on/