NBC/WSJ has released a new poll (full pdf below) of Indiana republicans.  Donald Trump holds a significant 15 point lead over Senator Ted Cruz, and a 36 point lead over Ohio Governor John Kasich.
When Kasich is removed from the polled equation, to allow for a head-to-head comparison, Donald Trump beats Ted Cruz 53 / 42.

[…] “In Indiana, Trump is positioned to corral all the [state’s 57] delegates, which will be a big prize toward winning the nomination outright,” says Lee Miringoff, director of the Marist College Institute for Public Opinion. “Clinton and Sanders are more likely to divide the delegate pool, which will do little to change the narrative on the Democratic side.” (link)

Via NBC – […] The NBC/WSJ/Marist poll was conducted April 26-28 — so mostly after Trump’s six-consecutive primary victories in Northeast and Mid-Atlantic states, as well as after Cruz and Kasich announced an alliance/truce, whereby Kasich wouldn’t campaign in Indiana to help Cruz (in exchange for Cruz not campaigning in Oregon and New Mexico).

But 58 percent of likely Republican primary voters in Indiana say they disapprove of Cruz and Kasich teaming up to beat Trump in the Hoosier State, while 34 percent say they approve of the move.  (read more)
Wall Street Journal Write-up HERE
Here’s the poll data:
[scribd id=311136222 key=key-gfIMirdqJTesOeNDpFy4 mode=scroll]