Bernie Sanders is ready to help Democrats take control of the Senate.

The senator from Vermont is preparing a post-Labor Day blitz of campaign activity, according to three sources briefed on his plans, offering what Democratic leaders hope will be a late-in-the-race boost from the liberal icon to the party’s slate of Senate candidates.

In addition to attending campaign rallies, Sanders is also expected to raise money for individual candidates — including through the use of his vaunted list of small donors, according to one source close to the senator.

That list turned Sanders into a financial juggernaut during his underdog presidential campaign and has been of considerable interest to Democratic strategists, who think it could be a major source of money in down-ballot races.

Sanders’ effort will be the first time since his presidential run ended almost two months ago that he has helped Democrats as they try to win a majority in the Senate.