Electoral racism in its most naked, egregious and aggressive form is the unwillingness of white Americans to vote for a black candidate regardless of the candidate’s qualifications, ideology or party. This form of racism was a standard feature of American politics for much of the twentieth century. So far, Barack Obama has been involved in two elections that suggest that such racism is no longer operative. His re-election bid, however, may indicate that a more insidious form of racism has come to replace it.

The 2004 Illinois Senate race between Obama and Alan Keyes, two African-Americans, was a unique test of the persistence of old-fashioned electoral racism. For a truly committed electoral racist, neither Obama nor Keyes would have been acceptable—regardless of policy positions, biography or qualification—because both were black.

One way to determine how many people felt this way is to measure the “roll-off.” In presidential election years, a small percentage vote for the president, but then “roll off” by not casting ballots for state and local offices. A substantial increase in roll-off—larger than usual numbers of voters who picked John Kerry or George Bush but declined to choose between Obama and Keyes—would have been a measure of the unwillingness of some to vote for any black candidate. I tested this in 2004 and found no increase, statistical or substantive, in roll-off in Illinois. Faced with two black candidates, white voters were willing to choose one of them.

The 2008 general election was another referendum on old-fashioned electoral racism—this time among Democratic voters. The long primary battle between Hillary Clinton and Obama had the important effect of registering hundreds of thousands of Democrats. By October 2008, it was clear that Obama could lose the general election only if a substantial portion of registered Democrats in key states failed to turn out or chose to cross party lines. For Democrats to abandon their nominee after eight years of Bush could be interpreted only as an act of electoral racism.

Not only did white Democratic voters prove willing to support a black candidate; they overperformed in their repudiation of naked electoral racism, electing Obama with a higher percentage of white votes than either Kerry or Gore earned. No amount of birther backlash can diminish the importance of these two election results. We have not landed on the shores of postracial utopia, but we have solid empirical evidence of a profound and important shift in America’s electoral politics.

Still, electoral racism cannot be reduced solely to its most egregious, explicit form. It has proved more enduring and baffling than these results can capture. The 2012 election may be a test of another form of electoral racism: the tendency of white liberals to hold African-American leaders to a higher standard than their white counterparts. If old-fashioned electoral racism is the absolute unwillingness to vote for a black candidate, then liberal electoral racism is the willingness to abandon a black candidate when he is just as competent as his white predecessors.

The relevant comparison here is with the last Democratic president, Bill Clinton. Today many progressives complain that Obama’s healthcare reform was inadequate because it did not include a public option; but Clinton failed to pass any kind of meaningful healthcare reform whatsoever. Others argue that Obama has been slow to push for equal rights for gay Americans; but it was Clinton who established the “don’t ask, don’t tell” policy Obama helped repeal. Still others are angry about appalling unemployment rates for black Americans; but while overall unemployment was lower under Clinton, black unemployment was double that of whites during his term, as it is now. And, of course, Clinton supported and signed welfare “reform,” cutting off America’s neediest despite the nation’s economic growth.

Today, America’s continuing entanglements in Iraq and Afghanistan provoke anger, but while Clinton reduced defense spending, covert military operations were standard practice during his administration. In terms of criminal justice, Obama signed the Fair Sentencing Act, which decreased judicial disparities in punishment; by contrast, federal incarceration grew exponentially under Clinton. Many argue that Obama is an ineffective leader, but the legislative record for his first two years outpaces Clinton’s first two years. Both men came into power with a Democratically controlled Congress, but both saw a sharp decline in their ability to pass their own legislative agendas once GOP majorities took over one or both chambers.

These comparisons are neither an attack on the Clinton administration nor an apology for the Obama administration. They are comparisons of two centrist Democratic presidents who faced hostile Republican majorities in the second half of their first terms, forcing a number of political compromises. One president is white. The other is black.

In 1996 President Clinton was re-elected with a coalition more robust and a general election result more favorable than his first win. His vote share among women increased from 46 to 53 percent, among blacks from 83 to 84 percent, among independents from 38 to 42 percent, and among whites from 39 to 43 percent.

President Obama has experienced a swift and steep decline in support among white Americans—from 61 percent in 2009 to 33 percent now. I believe much of that decline can be attributed to their disappointment that choosing a black man for president did not prove to be salvific for them or the nation. His record is, at the very least, comparable to that of President Clinton, who was enthusiastically re-elected. The 2012 election is a test of whether Obama will be held to standards never before imposed on an incumbent. If he is, it may be possible to read that result as the triumph of a more subtle form of racism.