A collection of House Democrats is working behind the scenes to tee up the party’s first order of business in the new Congress: a big overhaul of campaign finance, voting and ethics laws.

Minority Leader Nancy Pelosi of California and Maryland Rep. John Sarbanes offered a sneak peak Friday of what will likely be christened HR 1 in the 116th Congress. Instead of starting from scratch, the bill will draw from numerous existing proposals — including some that have languished for years during GOP control.

Though short on specifics, the pair revealed that the package will draw from an existing voting rights measure (HR 2978) and a proposed change in federal ethics laws that would require disclosure of presidential tax returns.

Sarbanes, who leads the party’s Democracy Reform Task Force and has been working on the measure for months, called it a once in a generation opportunity to overhaul the nation’s political system. It also will offer Democrats a template as they head into the 2020 presidential campaigns. President Donald Trump, for example, has refused to release his tax returns.

“It’s pretty basic, but these are transformative reforms that we’re putting forward,” Sarbanes told reporters during a news conference Friday with Pelosi and several newly elected House Democrats whose campaigns highlighted ethics and campaign finance proposals.

The measure could easily pass the House, but likely along party lines. And even some of the package’s most ardent supporters acknowledge that Senate Majority Leader Mitch McConnell, the Kentucky Republican who led a Supreme Court challenge to a 2002 campaign finance overhaul, is likely to quash it in his chamber.