Based on this graph, what conclusion can someone draw?

2008 and 20012 were presidential election voter years.

The correct option is "2008 and 20012 were presidential election voter years."

The election to president of the United States of 2008 took place on Tuesday, November 4, 2008. The election determined the voters of the Electoral College of the United States and the presidential candidate who received the majority of the votes (270) by the College. Electoral to be the 44th President of the United States was Barack Obama, while Vice President Joe Biden was the 47th Vice President of the United States. The US presidential election of 2012 refers to the electoral process held on November 6, 2012. The Democratic candidate, incumbent President Barack Obama and his fellow Vice President Joe Biden were re-elected to a second term. nominated former Governor Mitt Romney of Massachusetts for the Presidency, and Congressman Paul Ryan of Wisconsin as the vice presidential candidate.