The Democratic National Committee has unleashed relentless attacks on a handful of GOP candidates in the ever-widening 2016 presidential field, while virtually ignoring others.

Kentucky Sen. Rand Paul Randal (Rand) Howard PaulSecond GOP senator to quarantine after exposure to coronavirus GOP senator to quarantine after coronavirus exposure The Hill's Morning Report - Sponsored by National Industries for the Blind - Trump seeks to flip 'Rage' narrative; Dems block COVID-19 bill MORE, New Jersey Gov. Chris Christie and former Florida Gov. Jeb Bush have emerged as the DNC’s top punching bags, while the committee has mostly disregarded other campaigns — including that of businessman Donald Trump Donald John TrumpBiden leads Trump by 36 points nationally among Latinos: poll Trump dismisses climate change role in fires, says Newsom needs to manage forest better Jimmy Kimmel hits Trump for rallies while hosting Emmy Awards MORE, who trails only Bush in some recent polls.

The Hill tallied the DNC's social media mentions of Republican presidential contenders, scanning press releases, tweets and Facebook posts from July 2014 through June 2015, to see whom the group has been hitting the most over the past year.

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Paul ranks as the DNC's top target, with 203 mentions. Christie follows with 202 attacks, and Bush trails closely behind him with 199.

With a slew of declared candidates and even more potential contenders, the DNC has spread its fire wide. The DNC has hit 17 potential Republican contenders over the last year.

That's a marked contrast from the 2012 cycle, when most attacks were aimed at Mitt Romney, who was seen as the likely GOP nominee early on.

Former Texas Gov. Rick Perry Rick PerryOVERNIGHT ENERGY: Democrats push resolution to battle climate change, sluggish economy and racial injustice | Senators reach compromise on greenhouse gas amendment stalling energy bill | Trump courts Florida voters with offshore drilling moratorium OVERNIGHT ENERGY: Trump signs major conservation bill into law | Senate votes to confirm Energy's No. 2 official | Trump Jr. expresses opposition to Pebble Mine project Senate votes to confirm Energy's No. 2 official MORE comes fourth in total mentions with 162, followed by Wisconsin Gov. Scott Walker and Sen. Marco Rubio Marco Antonio RubioSunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Florida senators pushing to keep Daylight Savings Time during pandemic Hillicon Valley: DOJ indicts Chinese, Malaysian hackers accused of targeting over 100 organizations | GOP senators raise concerns over Oracle-TikTok deal | QAnon awareness jumps in new poll MORE (R-Fla.), who were the target of 159 and 147 DNC statements or social media posts respectively. Also on the DNC's target list, Sen. Ted Cruz Rafael (Ted) Edward CruzMurkowski: Supreme Court nominee should not be taken up before election Battle lines drawn on precedent in Supreme Court fight Sunday shows - Ruth Bader Ginsburg's death dominates MORE (R-Texas) has 96 mentions.

A slew of longshot bids have also drawn punches from the DNC, with former Hewlett Packard CEO Carly Fiorina at 19, Dr. Ben Carson Benjamin (Ben) Solomon CarsonBiden cannot keep letting Trump set the agenda The Hill's 12:30 Report: Trump heads to New Hampshire after renomination speech Five takeaways on GOP's norm-breaking convention MORE with 15 mentions, Sen. Lindsey Graham Lindsey Olin GrahamMcConnell locks down key GOP votes in Supreme Court fight Will Republicans' rank hypocrisy hinder their rush to replace Ginsburg? Momentum growing among Republicans for Supreme Court vote before Election Day MORE (R-S.C.) the target of 13, businessman Donald Trump at 10, and former Sen. Rick Santorum (R-Pa.) garnering six mentions.

The large number of GOP candidates could pose a challenge for the DNC over where to direct their fire.

“The profusion of candidates and any drama their competition generates may suck attention away from Democrats as they attempt to define the 2016 election and recruit donors and volunteers,” said Michael Cornfield, research direct for Global Center for Political Engagement.

While Paul, Christie and Bush have drawn the most attention overall from the DNC, the group's targets have changed as Republican contenders enter the race and slide up and down in the polls. That's forced the DNC to keep their focus on a broad field.

“The DNC mentions GOP candidates whenever it sees a chance to highlight a difference between the two parties,” Cornfield added. “As manifest in something a leading GOP candidate said or something that just broke in the news.”

In July 2014, well before any declared candidates, Christie received the most GOP mentions with 10, but Paul garnered seven attacks and Walker six, reflecting their high standing in early GOP polls.

Christie, Paul and Walker dominated the DNC's targets the last six months of 2014, but with no emerging Republican frontrunner, Democrats hit a total of 18 potential contenders.

New candidates quickly drew the DNC's attention. Cruz took the top spot in March, when he became the first official major presidential contender, with 29 mentions. Cruz quickly vaulted to the top of the polls that month, but Walker, Paul, Bush and Rubio also saw their DNC mentions in the double digits.

But one candidate is garnering more and more of the DNC's attention. In the second half of 2014, the DNC hit Jeb Bush only 13 times, but in 2015 his mentions have surged.

The DNC has ramped up social media attacks on Bush each month this year. He received 19 hits in March, 35 in April, 46 in May and 57 in June.

Surprisingly in June, though, Paul still took the top spot, with the DNC knocking him a whopping 71 times.

GOP campaigns are taking those hits in stride, touting the attention as a sign they are viable threats.

“It should come as no surprise that the DNC is targeting Senator Rand Paul with their attacks — he is the single biggest threat to Hillary Clinton Hillary Diane Rodham ClintonBiden leads Trump by 36 points nationally among Latinos: poll Democratic super PAC to hit Trump in battleground states over coronavirus deaths Battle lines drawn on precedent in Supreme Court fight MORE’s candidacy,” said Sergio Gor, communications director for Paul’s campaign.

The DNC, though, isn't letting up on the Republican presidential field.

“Let’s talk about some other numbers voters might be even more interested in," Holly Shulman, the DNC’s national press secretary, told The Hill.

"Nine is the number of credit downgrades in Chris Christie’s New Jersey. 48 percent is how much tuition climbed in Bush’s Florida. $2.2 billion is the budget deficit in Walker’s Wisconsin. Too many to count is the number of positions Rand Paul has taken on any given issue," she continued.

"And 100 percent of the Republican candidates want to repeal the Affordable Care Act that has helped 16 million Americans gain access to health insurance.”