Originally published by the Voice of America (www.voanews.com). Voice of America is funded by the US Federal Government and content it exclusively produces is in the public domain. June 27, 2008 Obama and Clinton Hold Unity Rally ----------------------------------- http://enews.voanews.com/t?ctl=1CE285D:A6F02AD83191E160B8D34B4E55BEB8133CF5CDEF8FC051DA& Democratic senators try to unite supporters in first joint campaign appearance since Clinton suspended her presidential bid earlier this month Democratic presidential candidate Sen. Barack Obama, D-Ill. and Sen. Hillary Rodham Clinton, D-N.Y., wave prior to boarding plane at Washington's Reagan National Airport, 27 Jun 2008The northern U.S. state of New Hampshire town of Unity is the symbolic backdrop for Friday's first joint campaign appearance of U.S. Democrats Barack Obama and Hillary Clinton.The senators have been working to unite their supporters since Clinton suspended her presidential campaign at the end of a long and bruising primary battle. Both Clinton and Obama received exactly 107 ballots in the town's January primary.Also Friday, Republican candidate John McCain holds a town-hall style meeting with workers at a General Motors factory in Ohio. He has been trying to distinguish his economic policies from those of fellow Republican, U.S. President George Bush, as the U.S. economy continues through rough times.A new poll indicates Obama leads McCain in four key states.The poll, conducted by Quinnipiac ! University finds Obama slightly ahead in Colorado and Michigan, while scoring a double-digit lead in Wisconsin and Minnesota. Both Obama and McCain will address a conference of Latino officials in Washington on Saturday, in a bid to broaden their appeal among an important voting bloc.On Thursday, Clinton and her top donors met with Obama in Washington, offering him their support for the general election. In turn, Obama pledged to enlist his supporters to help Clinton pay off her massive campaign debt. Some information for this report was provided by AP and Reuters. .