Five prominent conservative activist leaders on Wednesday called for Senate Majority Leader Mitch McConnell Addison (Mitch) Mitchell McConnellMomentum growing among Republicans for Supreme Court vote before Election Day Trump expects to nominate woman to replace Ginsburg next week Video of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral MORE (R-Ky.) and the rest of his leadership team to resign, citing the Senate’s failure to pass much of President Trump’s agenda.

The conservative leaders, who are longtime critics of McConnell and the GOP establishment in Washington, slammed the Senate’s failure to pass an ObamaCare repeal bill.

“2017 has been a disappointing year for the millions of Americans who fully expected, and had every right to expect real change in Washington. Republicans were given full control of the federal government. They — you — have done nothing,” they wrote in a letter dated Wednesday to McConnell and his leadership team.

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They pointed to what they called broken promises to stop the flow of illegal immigration, to reduce the size of government, to reduce deficit spending and to repeal ObamaCare.

They also pinged McConnell for the Senate’s schedule of convening in the afternoon on Mondays and often recessing on Thursdays.

Ken Cuccinelli, president of the Senate Conservatives Fund, Jenny Beth Martin, co-founder of Tea Party Patriots, Adam Brandon, president of FreedomWorks, Brent Bozell, chairman of ForAmerica, David Bozell, president of ForAmerica and Richard Viguerie, a political direct mail pioneer, signed the letter.

“It is time for you and your leadership team to step aside, for new leadership that is committed to the promise made to the American people. America is too good for you to lead it,” they wrote.

It’s not the first time these leaders have called on McConnell to step aside, but it adds pressure on the GOP leader to deliver on tax reform or another major Trump priority before next year’s GOP primaries.

Former White House strategist Stephen Bannon has announced plans to back conservative challenges to settled Republican incumbents such as Senate Republican Policy Committee Chairman John Barrasso John Anthony BarrassoOVERNIGHT ENERGY: Democrats push resolution to battle climate change, sluggish economy and racial injustice | Senators reach compromise on greenhouse gas amendment stalling energy bill | Trump courts Florida voters with offshore drilling moratorium Senators reach compromise on greenhouse gas amendment stalling bipartisan energy bill The Hill's Morning Report - Sponsored by National Industries for the Blind - Trump, Biden battle over vaccine, economy; Congress returns MORE (R-Wyo.) and Senate Finance Committee Chairman Orrin Hatch Orrin Grant HatchBottom line Bottom line Senate GOP divided over whether they'd fill Supreme Court vacancy MORE (R-Utah) next year because of the Senate’s lack of progress in passing Trump’s agenda.

The conservative leaders also took aim at the leaders’ efforts to defeat Tea Party and conservative challengers in Senate Republican primaries. The Senate Leadership Fund, a political fundraising group linked with McConnell, spent more than $10 million in an unsuccessful bid to defeat Judge Roy Moore in the Alabama Senate Republican Primary.

“Those substantive failures come on top of your vicious, continuous, merciless attacks on grassroots Republicans, but most especially conservatives. Why do you hate the very people who are the biggest bloc of voters supporting every single member of the GOP Senate Caucus?” they wrote.

They accused McConnell and his allies of “blacklisting” vendors who work for conservative or Tea Party insurgents who challenge candidates backed by the Washington establishment.

They also slammed him for not putting more resources behind Darryl Glenn, who narrowly lost to Democratic Sen. Michael Bennet Michael Farrand BennetOVERNIGHT ENERGY: House Democrats tee up vote on climate-focused energy bill next week | EPA reappoints controversial leader to air quality advisory committee | Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' Senate Democrats demand White House fire controversial head of public lands agency Next crisis, keep people working and give them raises MORE (D-Colo.) in the 2016 Colorado Senate race, while strongly backing the losing effort of former Rep. Joe Heck (R-Nev.) in the Nevada Senate battle.

“In 2016, there were only two states in which the GOP had a chance to pick up Senate seats — Colorado and Nevada. In Nevada you led $25 million worth of spending on behalf of your chosen candidate, but you refused to spend any money on behalf of Darryl Glenn in Colorado simply because he was conservative,” the conservative activists wrote.