"Expectations that Trump will win the nomination have jumped by 25 percentage points since November among leaned Republicans," an ABC News/Washington Post poll stated.
In addition, two-thirds of the polled said they would accept Trump as the party's nominee.
"He’s seen by 56 percent as their most electable nominee in the general election next fall," the poll added.
Trump also maintains a wide lead nationally among leaned Republicans, polling 37 percent of votes, while Cruz has 21 percent.
"Trump’s support, as noted, continues to spring from anti-establishment and anti-immigrant sentiment within the GOP [Republican party], buttressed by economic discontent and by a broad sense among the rank and file that he’d be the party’s most electable pick," the poll concluded.
The US presidential election is scheduled for November 8, with first primaries starting in the state of Iowa on February 1.