Platner Mills Collins Senate primary.

The Democratic primary to take on Republican Sen. Susan Collins of Maine looks different due to the decision of one candidate to drop out and join a different race with high stakes. Jordan Wood, a onetime chief of staff to former U.S. Rep. Katie Porter of California, is dropping out of the Senate race to instead run for Maine’s 2nd Congressional District seat. In that key congressional district, incumbent Democratic U.S. Rep. Jared Golden recently announced that he will not seek another term. The top Democratic challengers to face Collins are Gov. Janet Mills, a party mainstay, and Graham Platner, an oyster farmer who has gained attention for progressive views and provocative online posts.