The peak came in 2004, during the reelection effort for George W. Bush. That year, nearly 7 percent of the Republican delegates were black, including 16 percent of those from Louisiana, 13 percent of those from Maryland, and 13 percent of the delegates from New York and Michigan. By 2008, those figures had plummeted: 1.6 percent overall, including none from Louisiana and none from Maryland.
Lovelace told Capehart that his estimate from last month was still preliminary (hence the dotted line, above) and that the party was working with outside groups to "ensure people from diverse backgrounds are able to participate during the convention." Attempts to contact Lovelace on Tuesday morning were not successful.
That said, this year's gathering will almost certainly rank among the bottom tier. The 2008 convention had the second-lowest density of black delegates, excluding 2016, trumped only by the 1964 convening that nominated Barry Goldwater. That was the year after the passage of the Civil Rights Act, one of the precipitating events that moves black Americans firmly into the Democratic camp.
That year, Barry Goldwater lost in a blowout -- earning less than 10 percent of the black vote. Only once, in 1968, has the party won when the density of black delegates was under 2 percent. (It is Richard Nixon's 1968 acceptance speech, incidentally, on which Trump is apparently modeling his own.)
The lack of diversity at the RNC has already been the subject of some debate. On Monday, Rep. Steve King (R-Iowa) caused an uproar when he defended the lack of diversity on the convention floor, asking "where did any other subgroup of people contribute more to civilization" than white people?
A poll from Quinnipiac University earlier this month showed Trump earning 1 percent of the black vote nationally. NBC News/Wall Street Journal polling in Ohio and Pennsylvania had worse news: In those states, Trump's share of the black vote was at zero.