As Democrats search for their way out of the political wilderness, a new think tank, introduced on Wednesday, has some ideas about where the party went wrong.

Among them: too much emphasis on issues like climate change and L.G.B.T.Q. rights, and far too much deference to the powerful liberal organizations championing those causes at the expense, some argue, of appealing to voters in battleground states.

The think tank, the Searchlight Institute, was started by Adam Jentleson, a veteran Democratic operative. He knows that his effort, intended to minimize the sway that left-leaning groups have over candidates before what is expected to be a crowded 2028 presidential primary, will infuriate almost everyone — activists, organizations and the party’s liberal base, which is urging Democrats to fight President Trump.

“The folks who are most to blame about Trump are the ones who pushed Democrats to take indefensible positions,” Mr. Jentleson said in an interview Tuesday, citing a series of positions Kamala Harris took in 2019 before walking back many of them once she became the Democratic presidential nominee in 2024.

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