Sen. Charles E. Schumer (D-N.Y.) on Monday told a group of progressive donors he plans to make debt-free college a part of his agenda as Senate majority leader if Democrats win control of the Senate on Tuesday.

The pledge is part of a broader effort to convince progressive supporters of Sen. Bernie Sanders (I-Vt.) to vote for other Democrats on the ballot on Election Day. Schumer made the appeal as part of a Progressive Change Campaign Committee fundraising email and the last-minute fundraising pitch is the latest sign the Sanders coalition succeeded in shifting the Democratic Party further to the left during the 2016 campaign.

“Major investment in jobs, debt-free college, immigration reform, criminal justice reform, closing corporate tax loopholes, a public option, paid family leave, raising the minimum wage, expanding Social Security, and confirming Supreme Court Justices who will overturn Citizens United will all be possible with a Democratic Majority,” the letter said.

Those goals could be difficult to achieve if Democrats are only able to win the minimum of five seats necessary for a 51-49 Senate majority. Democrats would still need Republican votes to get the 60 votes necessary to overcome a filibuster. It is unlikely that many Republicans will be willing to back items like a debt-free college plan.

The Monday email aims to convince Sanders supporters to donate to last-minute get-out-the-vote efforts for mainstream Democrats running for Senate. About half a dozen GOP incumbents are in tight races in states like Pennsylvania, Wisconsin, New Hampshire and Missouri. Democrats hope that high turnout from progressives could help put Democrats running in those states over the top.

“As a strategist, I know that progressives have an opportunity to make a big difference the next few years — if we win,” the letter said.

In recent months, Schumer has committed to addressing a number of issues from the Sanders platform, including immigration  and criminal justice reform. Last month an interview with CNBC’s John Harwood, Schumer said he expected immigration would lead his agenda, along with an infrastructure plan funded by international tax reform.

Each of those proposals has some some bipartisan appeal — but Democrats and Republicans don’t agree on all of the critical details. If Democrats do win the Senate, Schumer will have to craft legislation that can satisfy progressives and still pass the Senate and be approved by a GOP-led House. That’s no easy task.