DES MOINES — U.S. Sen. Tom Harkin predicted Wednesday that Iowa Gov. Tom Vilsack will be picked to lead the Democratic National Committee, citing what he contends is growing support for Vilsack among party leaders. Harkin, D-Iowa, said Vilsack has the support of U.S. Sen. Dick Durban, D-Illinois, House Minority Leader Nancy Pelosi, D-California, and U.S. Sen. John Kerry of Massachusetts, the party’s 2004 presidential nominee. Earlier this week Vilsack received strong backing from newly elected Senate Minority Leader Harry Reid, D-Nevada. “He’s getting more and more support as the days go by,” Harkin told Iowa reporters on a conference...