|Sen. Tom Carper of Delaware|
There are still nine members of the Democratic caucus in the United States Senate who still have not endorsed marriage equality:
There are three Senators from blue states who have are on this list: Casey of Pennsylvania (who is anti-choice, so is known to be an outlier on social issues in the Democratic party), Nelson of Florida, and Carper of Delaware. The most curious of these is Tom Carper because not only is Delaware a blue state, but recent polls have shown that a majority of respondents in Delaware support marriage equality 54% to 37%. Two-thirds of Democratic voters nationwide support marriage equality so it is very curious why a Democratic senator from a Democratic state would not announce his support for marriage, especially when he does not have to face the voters for 5 more years?
Inquiring minds want to know!