National reaction to Obama's pick

"In naming my colleague and friend Sen. Joe Biden to be the vice presidential nominee, Sen. Obama has continued in the best traditions for the vice presidency by selecting an exceptionally strong, experienced leader and devoted public servant. Sen. Biden will be a purposeful and dynamic vice president who will help Sen. Obama both win the presidency and govern this great country." Sen. Hillary Rodham Clinton, D-N.Y.

"There has been no harsher critic of Barack Obama's lack of experience than Joe Biden. Biden has denounced Barack Obama's poor foreign-policy judgment and has strongly argued in his own words what Americans are quickly realizing — that Barack Obama is not ready to be president." Ben Porritt, spokesman for the John McCain campaign

"We now have the ticket that's going to bring the change we've all been hoping for. I join all of the members of the Senate Democratic caucus in congratulating Joe Biden — a great friend, a great Democrat, and now our party's nominee for vice president." Senate Majority Leader Harry Reid, D-Nev.

"Joe Biden is the right partner for Barack Obama. His many years of distinguished service to America, his seasoned judgment and his vast experience in foreign policy and national security will match up well with the unique challenges of the 21st century." Sen. Chuck Hagel, R-Neb.

"This is a terrific choice. Joe Biden understands the challenges facing our country at home and abroad, and his long history of bipartisanship in the Senate will be a welcome asset. He will be a tireless and enthusiastic partner for Sen. Obama in the campaign and in the White House." Sen. Carl Levin, D-Mich.

— The Associated Press