In Joe Biden’s last stand, a test for American centrism

It all comes down to South Carolina.

For 50 years, American centrists had an established way of looking at the world. And for 50 years, Joe Biden has been a standard bearer for that bipartisan way of life.

Now, after dismal showings in the first two contests and a stronger effort last weekend in Nevada, the former vice president and his brand of politics have one last chance to make a stand in this critical Southern state.

Swooping into Charleston after a second-place finish in Nevada, Mr. Biden is demonstrating there’s some fight in him yet – an “edge,” as one voter said after a campaign event on Monday. This week, influential South Carolina Rep. Jim Clyburn endorsed his longtime friend, after a feisty debate performance brought praise from