And that's what set the House members off, because none of them believes there will be any more than one roll-call vote for the nominee.

In their view, that means elected Democratic officials -- who have been put into office by hundreds of thousands or even millions of constituents -- won't play a role in nominating their party's presidential candidate.

"I believe this decision, if they go forward, is going to do terrible damage to party harmony," said Rep. Gerry Connolly (D-Va.), who raised his objections with Perez during Tuesday's dinner. "It disenfranchises the elected leadership of the party. The last time we allowed that to happen was 1972, and we had the worst landslide in our history."

:: Hello!
The Modern History of the Democratic Presidential Primary, 1972-2008
"Most political observers consider 1972 the beginning of the "modern era" of presidential politics. After the controversial 1968 presidential cycle..."
The Modern History of the Republican Presidential Primary, 1976-2012
"While the Republican Party also went on to adopt [']many reforms['] as well, it importantly has never adopted proportionality as a universal rule, largely leaving delegate allocation methods to the state parties."

Diversity is the key to economic and political evolution.