The primary of the unbound delegates

The primaries and caucuses to select the Republican presidential nominee are officially scheduled to end on June 7. That's a big day when five states vote — California, New Jersey, South Dakota, Montana and New Mexico. But it's quite possible that no candidate will have amassed enough pledged delegates to insure a majority at the convention. The magic number needed is 1,237. Donald Trump is the clear frontrunner, but he still needs to win more than 50 percent of the remaining delegates to reach

The primaries and caucuses to select the Republican presidential nominee are officially scheduled to end on June 7. That's a big day when five states vote — California, New Jersey, South Dakota, Montana and New Mexico. But it's quite possible that no candidate will have amassed enough pledged delegates to insure a majority at the convention. The magic number needed is 1,237. Donald Trump is the clear frontrunner, but he still needs to win more than 50 percent of the remaining delegates to reach…