Question: What fraction of the population was enslaved in 1860 in the state represented by a senator who won a South Carolina primary?

full_context: Document 1: North Carolina: In 1860, North Carolina was a slave state, in which one-third of the population was enslaved. This was a smaller proportion than in many Southern states. The state did not vote to join the Confederacy until President Abraham Lincoln called on it to invade its sister state, South Carolina, becoming the last or second-to-last state to officially join the Confederacy. The title of "last to join the Confederacy" has been disputed; although Tennessee's informal secession on May 7, 1861, preceded North Carolina's official secession on May 20, the Tennessee legislature did not formally vote to secede until June 8, 1861.
Document 2: 2004 United States presidential election: Kerry would later state that "the widespread irregularities make it impossible to know for certain that the [Ohio] outcome reflected the will of the voters." In the same article, Democratic National Committee Chairman Howard Dean said "I'm not confident that the election in Ohio was fairly decided... We know that there was substantial voter suppression, and the machines were not reliable. It should not be a surprise that the Republicans are willing to do things that are unethical to manipulate elections. That's what we suspect has happened."
Document 3: John Kerry: During his bid to be elected president in 2004, Kerry frequently criticized President George W. Bush for the Iraq War. While Kerry had initially voted in support of authorizing President Bush to use force in dealing with Saddam Hussein, he voted against an $87 billion supplemental appropriations bill to pay for the subsequent war. His statement on March 16, 2004, "I actually did vote for the $87 billion before I voted against it," helped the Bush campaign to paint him as a flip-flopper and has been cited as contributing to Kerry's defeat.
Document 4: 2004 United States presidential election: In sheer numbers, Kerry had fewer endorsements than Howard Dean, who was far ahead in the superdelegate race going into the Iowa caucuses in January 2004, although Kerry led the endorsement race in Iowa, New Hampshire, Arizona, South Carolina, New Mexico and Nevada. Kerry's main perceived weakness was in his neighboring state of New Hampshire and nearly all national polls. Most other states did not have updated polling numbers to give an accurate placing for the Kerry campaign before Iowa. Heading into the primaries, Kerry's campaign was largely seen as in trouble, particularly after he fired campaign manager Jim Jordan. The key factors enabling it to survive were when fellow Massachusetts Senator Ted Kennedy assigned Mary Beth Cahill to be the campaign manager, as well as Kerry's mortgaging his own home to lend the money to his campaign (while his wife was a billionaire, campaign finance rules prohibited using one's personal fortune). He also brought on the "magical" Michael Whouley who would be credited with helping bring home the Iowa victory the same as he did in New Hampshire for Al Gore in 2000 against Bill Bradley.
Document 5: North Carolina: While slaveholding was slightly less concentrated than in some Southern states, according to the 1860 census, more than 330,000 people, or 33% of the population of 992,622, were enslaved African Americans. They lived and worked chiefly on plantations in the eastern Tidewater. In addition, 30,463 free people of color lived in the state. They were also concentrated in the eastern coastal plain, especially at port cities such as Wilmington and New Bern, where a variety of jobs were available. Free African Americans were allowed to vote until 1835, when the state revoked their suffrage in restrictions following the slave rebellion of 1831 led by Nat Turner. Southern slave codes criminalized willful killing of a slave in most cases.
Document 6: 2004 United States presidential election: By the January 2004 Iowa caucuses, the field had dwindled down to nine candidates, as Bob Graham had dropped out of the race. Howard Dean was a strong front-runner. However, the Iowa caucuses yielded unexpectedly strong results for Democratic candidates John Kerry, who earned 38% of the state's delegates and John Edwards, who took 32%. Former front-runner Howard Dean slipped to 18% and third place, and Richard Gephardt finished fourth (11%). In the days leading up to the Iowa vote, there was much negative campaigning between the Dean and Gephardt camps.
Document 7: 2004 United States presidential election: In March's Super Tuesday, Kerry won decisive victories in the California, Connecticut, Georgia, Maryland, Massachusetts, New York, Ohio, and Rhode Island primaries and the Minnesota caucuses. Dean, despite having withdrawn from the race two weeks earlier, won his home state of Vermont. Edwards finished only slightly behind Kerry in Georgia, but, failing to win a single state other than South Carolina, chose to withdraw from the presidential race. Sharpton followed suit a couple weeks later. Kuninch did not leave the race officially until July.
Document 8: North Carolina: After 1800, cotton and tobacco became important export crops. The eastern half of the state, especially the Tidewater region, developed a slave society based on a plantation system and slave labor. Many free people of color migrated to the frontier along with their European-American neighbors, where the social system was looser. By 1810, nearly 3 percent of the free population consisted of free people of color, who numbered slightly more than 10,000. The western areas were dominated by white families, especially Scots-Irish, who operated small subsistence farms. In the early national period, the state became a center of Jeffersonian and Jacksonian democracy, with a strong Whig presence, especially in the West. After Nat Turner's slave uprising in 1831, North Carolina and other southern states reduced the rights of free blacks. In 1835 the legislature withdrew their right to vote.
Document 9: North Carolina: On November 21, 1789, North Carolina became the twelfth state to ratify the Constitution. In 1840, it completed the state capitol building in Raleigh, still standing today. Most of North Carolina's slave owners and large plantations were located in the eastern portion of the state. Although North Carolina's plantation system was smaller and less cohesive than that of Virginia, Georgia, or South Carolina, significant numbers of planters were concentrated in the counties around the port cities of Wilmington and Edenton, as well as suburban planters around the cities of Raleigh, Charlotte, and Durham in the Piedmont. Planters owning large estates wielded significant political and socio-economic power in antebellum North Carolina, which was a slave society. They placed their interests above those of the generally non-slave-holding "yeoman" farmers of western North Carolina. In mid-century, the state's rural and commercial areas were connected by the construction of a 129-mile (208 km) wooden plank road, known as a "farmer's railroad", from Fayetteville in the east to Bethania (northwest of Winston-Salem).
Document 10: John Kerry: In the 2004 Democratic presidential primaries, John Kerry defeated several Democratic rivals, including Sen. John Edwards (D-North Carolina.), former Vermont Governor Howard Dean and retired Army General Wesley Clark. His victory in the Iowa caucuses is widely believed to be the tipping point where Kerry revived his sagging campaign in New Hampshire and the February 3, 2004, primary states like Arizona, South Carolina and New Mexico. Kerry then went on to win landslide victories in Nevada and Wisconsin. Kerry thus won the Democratic nomination to run for President of the United States against incumbent George W. Bush. On July 6, 2004, he announced his selection of John Edwards as his running mate. Democratic strategist Bob Shrum, who was Kerry's 2004 campaign adviser, wrote an article in Time magazine claiming that after the election, Kerry had said that he wished he'd never picked Edwards, and that the two have since stopped speaking to each other. In a subsequent appearance on ABC's This Week, Kerry refused to respond to Shrum's allegation, calling it a "ridiculous waste of time."
Document 11: 2004 United States presidential election: The following week, John Edwards won the South Carolina primary and finished a strong second in Oklahoma to Clark. Lieberman dropped out of the campaign the following day. Kerry dominated throughout February and his support quickly snowballed as he won caucuses and primaries, taking in a string of wins in Michigan, Washington, Maine, Tennessee, Washington, D.C., Nevada, Wisconsin, Utah, Hawaii, and Idaho. Clark and Dean dropped out during this time, leaving Edwards as the only real threat to Kerry. Kucinich and Sharpton continued to run despite poor results at the polls.
Document 12: North Carolina: On November 21, 1789, North Carolina became the twelfth state to ratify the Constitution. In 1840, it completed the state capitol building in Raleigh, still standing today. Most of North Carolina's slave owners and large plantations were located in the eastern portion of the state. Although North Carolina's plantation system was smaller and less cohesive than that of Virginia, Georgia, or South Carolina, significant numbers of planters were concentrated in the counties around the port cities of Wilmington and Edenton, as well as suburban planters around the cities of Raleigh, Charlotte, and Durham in the Piedmont. Planters owning large estates wielded significant political and socio - economic power in antebellum North Carolina, which was a slave society. They placed their interests above those of the generally non-slave - holding ``yeoman ''farmers of western North Carolina. In mid-century, the state's rural and commercial areas were connected by the construction of a 129 - mile (208 km) wooden plank road, known as a`` farmer's railroad'', from Fayetteville in the east to Bethania (northwest of Winston - Salem).
Document 13: 2004 United States presidential election: In September 2003, retired four-star general Wesley Clark announced his intention to run in the presidential primary election for the Democratic Party nomination. His campaign focused on themes of leadership and patriotism; early campaign ads relied heavily on biography. His late start left him with relatively few detailed policy proposals. This weakness was apparent in his first few debates, although he soon presented a range of position papers, including a major tax-relief plan. Nevertheless, the Democrats did not flock to support his campaign.
Document 14: 2004 United States presidential election: On July 6, John Kerry selected John Edwards as his running mate, shortly before the 2004 Democratic National Convention in Boston, held later that month. Days before Kerry announced Edwards as his running mate, Kerry gave a short list of three candidates: Sen John Edwards, Rep Dick Gephardt, and Gov Tom Vilsack. Heading into the convention, the Kerry/Edwards ticket unveiled their new slogan—a promise to make America "stronger at home and more respected in the world." Kerry made his Vietnam War experience the prominent theme of the convention. In accepting the nomination, he began his speech with, "I'm John Kerry and I'm reporting for duty." He later delivered what may have been the speech's most memorable line when he said, "the future doesn't belong to fear, it belongs to freedom", a quote that later appeared in a Kerry/Edwards television advertisement.
Document 15: 2004 United States presidential election: By summer of 2003, Howard Dean had become the apparent front runner for the Democratic nomination, performing strongly in most polls and leading the pack with the largest campaign war chest. Dean's strength as a fund raiser was attributed mainly to his embrace of the Internet for campaigning. The majority of his donations came from individual supporters, who became known as Deanites, or, more commonly, Deaniacs. Generally regarded as a pragmatic centrist during his time as governor, Dean emerged during his presidential campaign as a left-wing populist, denouncing the policies of the Bush administration (especially the 2003 invasion of Iraq) as well as fellow Democrats, who, in his view, failed to strongly oppose them. Senator Lieberman, a liberal on domestic issues but a hawk on the War on Terror, failed to gain traction with liberal Democratic primary voters.
ground_truth: one-third
sub_queries: Which candidate went on to win the South Carolina primary? Answer: John Edwards
Where was John Edwards a senator? Answer: North Carolina
What fraction of the population of North Carolina was enslaved in 1860? Answer: one-third