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Obama wins primaries clean sweep Obama wins primaries clean sweep
(about 2 hours later)
Illinois Senator Barack Obama looks set to overtake his rival, Senator Hillary Clinton, in the race for the Democratic presidential nomination.Illinois Senator Barack Obama looks set to overtake his rival, Senator Hillary Clinton, in the race for the Democratic presidential nomination.
In the latest round of primaries, Mr Obama has clinched Virginia, Maryland and the District of Columbia.In the latest round of primaries, Mr Obama has clinched Virginia, Maryland and the District of Columbia.
But neither has secured enough party delegates to secure the nomination to contest November's presidential poll.But neither has secured enough party delegates to secure the nomination to contest November's presidential poll.
For the Republicans, Senator John McCain is on course to win all three races, beating rival Mike Huckabee.For the Republicans, Senator John McCain is on course to win all three races, beating rival Mike Huckabee.
With eight consecutive primary wins behind him, Mr Obama is beginning to look formidable and the manner of his victory on Tuesday looks ominous for Mrs Clinton, says the BBC's North America editor, Justin Webb.With eight consecutive primary wins behind him, Mr Obama is beginning to look formidable and the manner of his victory on Tuesday looks ominous for Mrs Clinton, says the BBC's North America editor, Justin Webb.
Halfway thereHalfway there
"Tonight we're on our way," Mr Obama told supporters in Wisconsin, which will hold the next primary on 19 February."Tonight we're on our way," Mr Obama told supporters in Wisconsin, which will hold the next primary on 19 February.

Democrats

Hillary Clinton12 states, 1,198 delegates
Arizona, Arkansas, California, Florida, Massachusetts, Michigan, Nevada, New Hampshire, New Jersey, New York, Oklahoma, Tennessee
Barack Obama22 states, 1,223 delegates
Alabama, Alaska, Colorado, Connecticut, DC, Delaware, Georgia, Idaho, Illinois, Iowa, Kansas, Louisiana, Maine, Maryland, Minnesota, Missouri, Nebraska, North Dakota, South Carolina, Utah, Virginia, Washington state2,025 delegates needed for nomination. Source AP (includes all kinds of delegates)Q&A: US election delegates

Republicans

Mike Huckabee8 states, 241 delegates
Alabama, Arkansas, Georgia, Iowa, Tennessee, West Virginia, Kansas, Louisiana
John McCain16 states, 821 delegates
Arizona, California, Connecticut, DC, Delaware, Florida, Illinois, Maryland, Missouri, New Hampshire, New Jersey, New York, Oklahoma, South Carolina, Virginia, Washington state
Mitt Romney11 states, 288 delegates
Campaign suspendedAlaska, Colorado, Maine, Massachusetts, Michigan, Minnesota, Montana, Nevada, North Dakota, Wyoming, Utah1,191 delegates needed for nomination. Source: AP (includes all kinds of delegates)

Democrats

Hillary Clinton12 states, 1,198 delegates
Arizona, Arkansas, California, Florida, Massachusetts, Michigan, Nevada, New Hampshire, New Jersey, New York, Oklahoma, Tennessee
Barack Obama22 states, 1,223 delegates
Alabama, Alaska, Colorado, Connecticut, DC, Delaware, Georgia, Idaho, Illinois, Iowa, Kansas, Louisiana, Maine, Maryland, Minnesota, Missouri, Nebraska, North Dakota, South Carolina, Utah, Virginia, Washington state2,025 delegates needed for nomination. Source AP (includes all kinds of delegates)Q&A: US election delegates

Republicans

Mike Huckabee8 states, 241 delegates
Alabama, Arkansas, Georgia, Iowa, Tennessee, West Virginia, Kansas, Louisiana
John McCain16 states, 821 delegates
Arizona, California, Connecticut, DC, Delaware, Florida, Illinois, Maryland, Missouri, New Hampshire, New Jersey, New York, Oklahoma, South Carolina, Virginia, Washington state
Mitt Romney11 states, 288 delegates
Campaign suspendedAlaska, Colorado, Maine, Massachusetts, Michigan, Minnesota, Montana, Nevada, North Dakota, Wyoming, Utah1,191 delegates needed for nomination. Source: AP (includes all kinds of delegates)
Mrs Clinton, who has recently lost a number of key staff, indicated she would be focusing on the races in Ohio and Texas in March as her best hope to retake the lead.Mrs Clinton, who has recently lost a number of key staff, indicated she would be focusing on the races in Ohio and Texas in March as her best hope to retake the lead.
"We're going to sweep across Texas in the next three weeks," she said, making no mention of the three contests she lost."We're going to sweep across Texas in the next three weeks," she said, making no mention of the three contests she lost.
"I'm tested, I'm ready, let's make it happen," she told supporters."I'm tested, I'm ready, let's make it happen," she told supporters.
Each Democratic candidate is about halfway to winning the 2,025 delegates needed to secure victory at the party's national convention in August.Each Democratic candidate is about halfway to winning the 2,025 delegates needed to secure victory at the party's national convention in August.
With most of the Tuesday's votes counted, Mr Obama has edged into the lead with 1,223 delegates to Mrs Clinton's 1,198 delegates, according to the Associated Press news agency.With most of the Tuesday's votes counted, Mr Obama has edged into the lead with 1,223 delegates to Mrs Clinton's 1,198 delegates, according to the Associated Press news agency.
Mrs Clinton's deputy campaign manager, Mike Henry, reportedly stepped down on Monday, in a shake-up coming only a day after her campaign manager left.Mrs Clinton's deputy campaign manager, Mike Henry, reportedly stepped down on Monday, in a shake-up coming only a day after her campaign manager left.
Meanwhile Mr McCain, who holds a strong lead over his Republican rival Mike Huckabee, told supporters he was "fired up and ready to go".Meanwhile Mr McCain, who holds a strong lead over his Republican rival Mike Huckabee, told supporters he was "fired up and ready to go".
Significant leadSignificant lead
With results counted in almost all of Virginia's precincts, Mr McCain led by 50% to Mr Huckabee's 41%.With results counted in almost all of Virginia's precincts, Mr McCain led by 50% to Mr Huckabee's 41%.
In the District of Columbia, Mr McCain took 68% of the Republican vote to 17% for Mr Huckabee, with almost all the votes counted. Congressman Ron Paul took 8%.In the District of Columbia, Mr McCain took 68% of the Republican vote to 17% for Mr Huckabee, with almost all the votes counted. Congressman Ron Paul took 8%.
We are approaching the end of the first half of this election on quite an upswing John McCain In pictures: Potomac primaryPrimary may prove pivotalElections come to Culpeper We are approaching the end of the first half of this election on quite an upswing John McCain In pictures: Potomac primaryPrimary may prove pivotalElections come to Culpeper href="http://www.bbc.co.uk/mediaselector/check/player/nol/newsid_7240000/newsid_7242100?redirect=7242151.stm&news=1&nbram=1&bbram=1&bbwm=1&nbwm=1&asb=1" onClick="javascript:newsi.utils.av.launch({el:this});return false;">John McCain
Mr McCain's victories mean he extends his significant lead in terms of the number of delegates who will vote for him at the party's national convention.Mr McCain's victories mean he extends his significant lead in terms of the number of delegates who will vote for him at the party's national convention.
But correspondents say Mr McCain still has some work to do to unite his party, amid continuing criticisms from leading party members who have questioned his conservative credentials.But correspondents say Mr McCain still has some work to do to unite his party, amid continuing criticisms from leading party members who have questioned his conservative credentials.
Mr Huckabee has been under pressure to stand aside for the sake of party unity, but has said he has no intention of pulling out.Mr Huckabee has been under pressure to stand aside for the sake of party unity, but has said he has no intention of pulling out.
Exit polls suggest he won the support of very conservative voters in Virginia by nearly three to one, while Mr McCain was backed by somewhat conservative and moderate Republicans.Exit polls suggest he won the support of very conservative voters in Virginia by nearly three to one, while Mr McCain was backed by somewhat conservative and moderate Republicans.
Broad appealBroad appeal
In Virginia, Mr Obama was leading by 64% to Mrs Clinton's 35.5%, with almost all precincts reporting.In Virginia, Mr Obama was leading by 64% to Mrs Clinton's 35.5%, with almost all precincts reporting.
His margin of victory was even greater in Washington DC, where he led by 75% to 24% with almost all the votes counted.His margin of victory was even greater in Washington DC, where he led by 75% to 24% with almost all the votes counted.
NEXT CONTESTS 19 Feb: Wisconsin (bi-party), Hawaii caucus (D)4 March: Ohio, Rhode Island, Texas, Vermont (bi-party) Send us your commentsElection at a glanceNEXT CONTESTS 19 Feb: Wisconsin (bi-party), Hawaii caucus (D)4 March: Ohio, Rhode Island, Texas, Vermont (bi-party) Send us your commentsElection at a glance
Analysts suggested the most significant aspect of Mr Obama's success was his broadening appeal across different demographic groups.Analysts suggested the most significant aspect of Mr Obama's success was his broadening appeal across different demographic groups.
Exit polls conducted for AP in Virginia suggested Mr Obama had won the support of two-thirds of men and almost six in 10 women.Exit polls conducted for AP in Virginia suggested Mr Obama had won the support of two-thirds of men and almost six in 10 women.
Mr Obama also made gains with women voters, who have been a core constituency for Mrs Clinton in past contests, and with white men and Latino voters.Mr Obama also made gains with women voters, who have been a core constituency for Mrs Clinton in past contests, and with white men and Latino voters.
And nine in 10 black voters in Virginia backed the Illinois senator, an even bigger margin than in previous primaries.And nine in 10 black voters in Virginia backed the Illinois senator, an even bigger margin than in previous primaries.
The economy was the top issue for both Democratic and Republican voters in the so-called Potomac primary, named after the river that runs through the two states and the nation's capital.The economy was the top issue for both Democratic and Republican voters in the so-called Potomac primary, named after the river that runs through the two states and the nation's capital.