Former President Barack Obama has endorsed more than 100 Democratic candidates in his first wave of 2020 down-ballot endorsements, hoping the Democrats can help control Congress after the November elections.

Obama revealed a list of 118 Democrats from 17 states that he backed in a tweet on Monday, Aug. 3. Among the Democratic candidates are those who are running for federal or state legislative offices.

“I’m proud to endorse this diverse and hopeful collection of thoughtful, empathetic, and highly qualified Democrats. If you’re in one of their districts or states, make sure you vote for them this fall. And if you can, vote early—by mail or in person,” Obama wrote.

Obama explained that the Democratic candidates will help the party “redeem our country’s promise by sticking up for working class people, restoring fairness and opportunity to our system, and fighting for the good of all Americans—not just those at the top.”

“They make me optimistic not just about our party’s chances in November, but about our country’s future long after that,” he added.

In the list of endorsements, Obama backed some Democrats looking to unseat Republican senators in Colorado, Iowa, Maine, North Carolina, and South Carolina, as the Democratic Party is seeking to take control of the Senate in November.

The former president also endorsed many sitting members of Congress and the candidates running at the state level that the National Democratic Redistricting Committee identified as essential to the upcoming redistricting process.

According to CNN, Obama staid neutral in the primaries but is getting increasingly involved in the 2020 campaign. He helped the presumptive Democratic presidential nominee Joe Biden hold a grassroots fundraiser in June and appeared in recent campaign videos with his former vice president. Last week, Obama called for voting reform and pressed for voting rights while delivering a pointed eulogy for Rep. John Lewis.