Graham Platner challenges Susan Collins in Maine Senate race

ABC and CBS project Graham Platner will face Republican Sen. Susan Collins in Maine's November Senate race. ABC says the race is expected to be among the most-watched midterm contests as Democrats try to flip the Senate. The Guardian reported Platner won 72% after allegations emerged during the primary campaign.

1. Frame 1ABC and CBS say the Collins-Platner matchup opens a November election fight for Maine voters and Senate control.
2. Frame 2ABC says Democrats see Maine as a flip opportunity as they try to regain Senate control.
3. Frame 3Platner is an oyster farmer and military veteran from Hancock County, now carrying the Democratic nomination.
4. Frame 4The Guardian reported Platner won 72% after a primary shaped by allegations about his past.
5. Frame 5Gov. Janet Mills suspended her campaign in April, leaving Platner against lower-profile primary rivals.
6. Frame 6November now pits Collins' incumbency against a progressive challenger backed by Sanders, Warren, and Schumer.