Season 5 Edit
When we are introduced to Buddy in Nev-AD-a, he is the Nevada Secretary of State. He first meets with the O'Brien and Meyer teams to discuss the rules of the recount. He has a conversation with Amy in Mother, surprised and amused by her language.
Buddy then reappears at the White House Congressional Ball, where he and Amy go home together. While in Nevada shortly before Inauguration day, Amy and Buddy seem to be in a relationship together.
Season 6 Edit
In the sixth season, Buddy and Amy are still together, and Buddy is running for Nevada Governor.