Though few analysts believe that he actually has a shot at clinching the nomination, Trump's entry into the field has shaken up the race over the past month.
Trump is leading the Republican field in several states, and is highly likely to appear in the first Republican primary debate in early August.
As Politico points out, Trump's populist, conservative message has potentially helped him siphon away supporters from more conservative candidates like Sen. Ted Cruz (R-Texas).
And in a race in which New Jersey Gov. Chris Christie (R) has attempted to gain traction by promising to "tell it like it is," Trump's outspoken, provocative statements on hot issues from immigration to China have dominated countless news cycles and gotten far more attention online.
And Trump isn't shying away from a loud fight with his Republican rivals.
Former Florida Gov. Jeb Bush (R) and Sen. Marco Rubio (R-Florida) have condemned Trump for his statements about immigrants. This has only appeared to fuel Trump's fire - the real-estate mogul has dismissed Bush's entire candidacy and accused Rubio of shifting his position on immigration because of weak poll numbers.