23 April, 2008 - Published 14:10 GMT
Clinton wins Pennsylvania primaries
Hillary Clinton has won the Democratic primary in Pennsylvania and dismissed calls for her to quit the race for the party's Presidential nomination. Her rival, Barack Obama, conceded defeat. This report from Jonathan Beale in Washington
Hillary Clinton took to the stage in Philadelphia to the strains of the song, "I Won't Back Down". It said it all. Pennsylvania provided the clear cut victory that keeps her presidential hopes alive.
Addressing her victory rally, Hillary Clinton claimed the tide was turning. Once again she has proved that she can win the big battleground states that will be crucial in a general election.
Barack Obama still retains the overall lead, but her attacks and his missteps appear to have hurt. The white, working class voters he'd so carefully courted turned out in force but not for him. He has already moved on to Indiana, the next contest. Hillary Clinton's not yet turned the tables but she's proving hard to beat.
Jonathan Beale, BBC News, Washington