Thinking out loud, the differences seem to be:
Personable: Now, maybe John Kerry doesn’t have to be personable anymore. He’s entrenched, during his last campaign he always came off as rigid and aloof… undoubtedly a factor in his painful loss. Ed is an above average and articulate speaker who just seems… human.
Eager: Wouldn’t it be nice to have someone as senator who is eager to be in the senate? Eager to do the work of a senator and eager to be responsive to the needs of MA residents? I’m not saying that wanting to be president disqualifies someone from being in their current office, but let’s be real… he spent nearly half of his current term running for president and recovering from his loss. How about someone who spends his whole term representing MA residents in the Senate?
Passionate: Need I say more?