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 HarkinWisconsin lawmaker gets buzz-cut after vowing not to cut hair until sign language bill passed Democratic debates kick off Iowa summer sprint Key endorsements: A who's who in early states MORE, Jeff MerkleyJeffrey (Jeff) Alan MerkleyOvernight Health Care: Juul's lobbying efforts fall short as Trump moves to ban flavored e-cigarettes | Facebook removes fact check from anti-abortion video after criticism | Poll: Most Democrats want presidential candidate who would build on ObamaCare Overnight Energy: Democrats call for Ross to resign over report he threatened NOAA officials | Commerce denies report | Documents detail plan to decentralize BLM | Lawmakers demand answers on bee-killing pesticide Oregon Democrats push EPA to justify use of pesticide 'highly toxic' to bees MORE and Sherrod BrownSherrod Campbell BrownHillicon Valley: Google to promote original reporting | Senators demand answers from Amazon on worker treatment | Lawmakers weigh response to ransomware attacks Senate Democrats want answers on 'dangerous' Amazon delivery system Hillicon Valley: Uber vows to defy California labor bill | Facebook, Google, Twitter to testify on mass shootings | Facebook's Libra to pursue Swiss payments license 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 ObamaAt debate, Warren and Buttigieg tap idealism of Obama, FDR Appeals court allows Trump emoluments case to move forward Warren isn't leading polls, but at debate she looks like front-runner MORE has spoken at the campaign's previous Take Back America events, like this closing address from 2006: