It's so frustrating hearing people compare Maine to North Dakota/Indiana/Missouri and thinking this will be a cakewalk. It's not the same at all. Indiana and Missouri were 6x as Republican as Maine in 2016, and North Dakota 12x as Republican. Collins may have lost a lot of crossover appeal, but she also doesn't need crossover appeal anymore.
First of all, nobody is saying this race will be a cake walk for the Democrats. I agree that Collins is no McCaskill or Heitkamp, but I do think she’s being overestimated. Second of all, your last sentence doesn’t make any sense. She DOES need crossover appeal. This is Maine, and even if it’s not as Democratic as it was in 2008, it’s still a blue state and she will need support from a decent amount of Democrats to win.