U.S. Democratic Party presidential hopeful Barack Obama says he does not plan to take a more negative tone against his opponent, Hillary Clinton, as their campaigns focus on upcoming contests.
In a radio interview on Wednesday, Senator Obama said he plans to continue talking about issues as he courts voters in Indiana and North Carolina, which will hold primaries May sixth.
Senator Clinton beat Obama Tuesday in the Pennsylvania primary by nearly 10 percentage points. But Obama still leads in the number of delegates who will nominate the party's candidate.
Clinton said in television interviews on NBC's Today Show and CBS's Early Show that her Pennsylvania victory shows she can build the electoral base needed to win the White House.
On the Republican side, Senator McCain on Thursday is to tour an area of the southern city of New Orleans devastated by Hurricane Katrina in 2005 and still struggling to recover.