From a report at the link below:
After Obama’s 2008 election, gun sales skyrocketed and demand increased permanently in some states.
As the possibility of the first black president became more likely, Americans feared increased gun control after the election. Federal tax receipts from the sales of pistols and revolvers increased 90 percent from the fourth quarter of 2007 to the fourth quarter of 2008, when Obama was elected.
The “Obama Effect,” as it’s called in the paper, reached record growth following Hillary Clinton’s concession speech in July 2008 and following the Democratic National Convention in September when Obama was formally selected as the party’s nominee. The largest increase was immediately following the election when demand for guns rose 60 percent.