It's wrong to be a sore loser.
Tad is running for president, but lost his parties primary.
Tad wants to keep working on a campaign.
Tad decides to campaign for the primary winner, instead of continuing to run.
Tad decides to run as a third party, against the primary winner, out of spite.
Tad feels like he has a purpose and gets along with the campaign team.
Tad is banished from his party and Tad feels alone.