Donald Trump's support is not falling while Ben Carson trails behind him based on the new poll conducted by Wall Street Journal/NBC News from Oct. 15 to 18.

Trump is now gaining the highest support he's ever had since joining the 2016 presidential race, garnering 25 percent among Republican primary voters.

On the other hand, Carson now has 22 percent based on the latest poll. In the previous month, the real estate mogul's support was at 21 percent, while the neurosurgeon's was at 20 percent, reports NBC News.

Trailing behind the two leading candidates, Senator Marco Rubio comes in with 13 percent, which is an increase of two percentage points from September. 

He is followed by Senator Ted Cruz with an expanded support of nine percent and former Florida Governor Jeb Bush with eight percent. 

The new WSJ/NBC poll also showed how Carly Fiorina also lost her stance when she captured only seven percent of support, as opposed to the 11 percent she got from the previous poll. She may have performed greatly in two Republican debates, but it seems that it didn't help in giving her the boost this time.

Trump may be consistently on the lead as the first choice for Republican primary voters, but Carson tops the choice for voters who believe they can support him.

Carson is also the strongest candidate of conservative Republicans, garnering 28 percent from the group, while Trump reigns over moderate or liberal Republicans, capturing 31 percent.

Meanwhile, the latest poll also showed the candidates who received the lowest support. Former governor of Arkansas Mike Huckabee and Ohio Governor John Kasich only got three percent each; Kentucky Senator Rand Paul only had two percent; and Chris Christie of New Jersey had one percent.

South Carolina Senator Lindsey Graham, Rick Santorum, George Pataki, Bobby Jindal of Louisiana and Jim Gilmore are presidential hopefuls who garnered less than one percent of support.