Conversation so far:
Who was the Republican nominee relative to Ron Paul?
Ron Paul said that under no circumstances would he be endorsing either of the two main parties' candidates (John McCain – Republican Party, or Barack Obama – Democratic Party).
What did Ron Paul refuse?
Ron Paul said that under no circumstances would he be endorsing either of the two main parties' candidates (John McCain – Republican Party, or Barack Obama – Democratic Party).
What was Ron Paul's reasoning for saying that under no circumstances would he be endorsing either of the two main parties' candidates in the 2008 presidential campaign?
Ron Paul said that under no circumstances would he be endorsing either of the two main parties' candidates because there were no real differences between them.
What time period was Ron Paul saying that under no circumstances would he be endorsing either of the two main parties' candidates?
Ron Paul said that under no circumstances would he be endorsing either of the two main parties' candidates during the 2008 presidential campaign.
Who ended up winning the 2008 Presidential election?
The Democratic ticket of Barack Obama and Joe Biden defeated the Republican ticket of John McCain and Sarah Palin.
Is there anything else that really sticks out about Ron Paul's refusal to endorse the Republican nominee in the 2008 presidential campaign besides his reasoning?
Ron Paul urged instead that the voters support the third-party candidates as a protest vote, to force change in the election process.
Is there anything bad that happened during Ron Paul's refusal to endorse the Republican nominee in the 2008 presidential campaign?
Shocked and disappointed that Bob Barr had pulled out of attending the press conference had admonished Ron Paul for remaining neutral, Ron Paul released a statement endorsing Chuck Baldwin.

Question: When did this all end?
Self-contained rewrite: When did Ron Paul's involvement in the 2008 presidential campaign end?