No incumbent democrat Senator retiring?

[windjammer]

According to wikipedia, all of them are running. No one is considering retirement?

[I’m not Stu]

Feinstein, Menendez, or Carper might retire if they do poorly in future polls.

[Nyvin]

Nikki Tsongas, Carol Shea-Porter,  and Gene Green are three that I know of who are retiring.

[Brittain33]

I've updated the title to what I think the OP meant.

[MarkD]

Nikki Tsongas, Carol Shea-Porter,  and Gene Green are three that I know of who are retiring.

The OP asked about Senators. Those you are referring to are members of the House. And yes, none of the Democratic Senators have said they are retiring. Is Menendez's trial over, ended with a mistrial due to hung jury? If so, it could depend on whether he is retried and if so, a bad outcome of the second trial could push him into retiring, even late in the campaign season, like Toricelli did in 2002.

[Cactus Jack]

I suspect Carper might yet pull the plug and hand the seat to Rochester. I dearly hope Cardin also decides to hang up his hat.

[Brittain33]

Nikki Tsongas, Carol Shea-Porter,  and Gene Green are three that I know of who are retiring.

The OP asked about Senators. Those you are referring to are members of the House.

To be fair, he hadn't asked about Senators when Nyvin posted their response. I added that after seeing the confusion.

[Doimper]

I dearly hope Cardin also decides to hang up his hat.

[Skunk]

Hirono might retire. Stage 4 kidney cancer's pretty rough.

[Bidenworth2020]

I dearly hope Cardin also decides to hang up his hat.

why?