Hillary ClintonHillary Diane Rodham ClintonGeorge HW Bush wears 'book socks' to Barbara Bush's funeral to honor her passion for literacy Obamas, Clintons to attend funeral of Barbara Bush Hillary Clinton to fundraise in DC for public charter high school MORE (D) leads every Republican challenger in hypothetical 2016 presidential match-ups, according to a McClatchy-Marist poll released on Wednesday.

Clinton is far and away the favorite to be her party’s presidential nominee, with 63 percent of Democrats favoring her candidacy. Vice President Biden is a distant second at 13 percent.

The Republican field is tight at the top, with GOP-leaning voters preferring New Jersey Gov. Chris Christie as the party’s candidate at 15 percent, followed by Rep. Paul RyanPaul Davis RyanScalise released from hospital after planned surgery GOP sold Americans a bill of goods with tax reform law Impeaching Rosenstein? Some Republicans are talking about it MORE (Wis.) at 13 percent, Sen. Marco RubioMarco Antonio RubioStudents gather outside White House after walkout to protest gun violence Overnight Energy: Senate confirms Bridenstine as NASA chief | Watchdog probes Pruitt’s use of security detail | Emails shine light on EPA science policy changes Senate confirms Trump’s pick to lead NASA MORE (Fla) at 12 percent, former Florida Gov. Jeb Bush at 10 percent, Sen. Rand PaulRandal (Rand) Howard PaulPompeo lacks votes for positive vote on panel CIA declassifies memo on nominee's handling of interrogation tapes Overnight Defense: House to begin work on defense policy bill | Panel to vote Monday on Pompeo | Trump to deliver Naval Academy commencement speech | Trump appeals decision blocking suspected combatant's transfer MORE (Ky.) at 9 percent, Sen. Ted CruzRafael (Ted) Edward CruzCruz's Dem challenger slams Time piece praising Trump Race for Republican Speaker rare chance to unify party for election 32 male senators back Senate women's calls to change harassment rules MORE (Texas) at 7 percent, and Texas Gov. Rick Perry at 4 percent support.

In a head-to-head match-up, Christie fairs best against Clinton, but trails the former secretary of State 47 percent to 41 percent. In the same poll from April, Clinton edged Christie by 3 percentage points, 46 percent to 43 percent.

Clinton and Christie are two of the most popular political figures in the country.

According to a Quinnipiac University study released earlier this month, Clinton has a 55 percent favorability rating, while 38 percent of voters had an unfavorable view. Christie has a 45 percent favorability rating and 18 percent unfavorable. The New Jersey governor is also viewed favorably by a plurality of Democrats by a margin of 41 percent to 19 percent.

Bush is the next closest contender in the McClatchy-Marist poll, trailing Clinton 48 percent to 40 percent. Clinton leads Rubio 50 percent to 38 percent, Paul 50 percent to 38 percent, Ryan 53 percent to 37 percent, and Perry by 52 percent support to 36 percent.

None of the potential candidates have publicly committed to a 2016 run. However, Ready for Hillary, a super-PAC pushing the former New York senator to run, is loaded with former Obama campaign activists.

The Marist-McClatchy poll of 1,204 adults was conducted between July 15-18 and has a 3.1 percentage point margin of error.