Which conclusion is supported by information presented in the graph?

The graph provides supporting evidence for the statement that the breakdown of Americans by political party did not change much. The graph doesn’t give any information about how independents voted in any of these years . The Democratic and Republican parties are competitive despite the larger numbers of Democrats because the groups that tend to identify with the Democratic Party are groups that also tend to have lower-than-average voter turnout. Independents comprise 10 to 13 percent of the American public , and the Democratic Party is larger than the Republican Party .