Yesterday, Rep. Tom Latham (R) decided that he would not run for the Senate. Latham was widely viewed as one of the Republican Party’s best hopes for winning the seat in the general election and would have given King a very tough primary fight for the party’s nomination.

The news got even better for King today when Lt. Gov. Kim Reynolds (R), another potential top-tier candidate, announced that she would not challenge King in the primary. Reynolds will only run if King decides not to.