In advance of the "America's Future Now" progressive convention in D.C. next week, organizers are set to hold a conference call tomorrow in which they'll declare the U.S. to officially be a "center-left nation."

The organizers -- Rock the Vote executive director Heather Smith, Women's Voices. Women Votes president Page Gardner, Campaign for America's Future co-director Robert Borosage, Media Matters for America president Eric Burns -- will make the announcement early Wednesday afternoon in conjunction with the release of a new report that will reportedly "show that with conservatives more and more isolated, majorities of Americans hold progressive positions on a broad range of controversial issues and key constituencies that favor progressives are growing larger."

Advertised attendees at the June 1-3 conference include Howard Dean, Sens. Tom HarkinThomas (Tom) Richard HarkinTrump's trial a major test for McConnell, Schumer New Hampshire parochialism, not whiteness, bedevils Democrats Democrats must question possible political surveillance MORE, Jeff MerkleyJeffrey (Jeff) Alan MerkleyEnvironmentalists, Oregon senators oppose DOT increasing transport of natural gas by rail Senate Democrat says he is concerned intelligence community is 'bending' Soleimani presentations Democrats conflicted over how to limit Trump's war powers MORE and Sherrod BrownSherrod Campbell BrownSunday shows - All eyes on Senate impeachment trial Senate Democrat: 'Fine' to hear from Hunter Biden Sunday shows preview: Lawmakers gear up for Senate impeachment trial MORE, and Reps.Barney Frank, Barbara Lee, Jared Polis, Donna Edwards, Keith Ellison, Jan Schakowsky and Raul Grijalva. Gov. Ed Rendell is listed on the schedule as an invited speaker.

Barack ObamaBarack Hussein ObamaBiden breaks away from 2020 pack in South Carolina National Archives says it altered Trump signs, other messages in Women's March photo Climate 'religion' is fueling Australia's wildfires MORE has spoken at the campaign's previous Take Back America events, like this closing address from 2006: