The next white male Democratic president

[Mister Mets]

No clue.

It could very well be decades before this happens given the party's preference for a female President, and even a Hispanic President, as well as the advantages African-American candidates would have in a Democratic primary. Then there's also the Republican party, which means about half the nominees are going to lose.

It could very well be someone very obscure today.

In 1980, the Democrat's next non-Southerner President was in Occidental college.

[Mister Mets]

There are several scenarios under which it would take a long time.

1. Great For Democrats
Hillary Clinton wins the White House with Julian Castro as her running mate. Julian Castro wins the presidency in his own right. A Republican wins in 2028 after five terms of Democratic presidents (none of whom are white males) and gets reelected. It'll be an open question in 2036 whether the Democrats would nominate a white guy, given the likely alternatives. So in this scenario it could take generations.

2. Okay For Democrats
A Republican wins in 2016 and is reelected in 2020. Democrats win in 2024 with a female candidate (Kamala Harris?) who is reelected in 2028. A Republican wins in 2032 and is reelected in 2036. Whether we get a white male Democratic president in 2040 would depend on the nominating process and the general election. If the candidate isn't a white guy, the cycle could repeat.

It could also happen a lot faster. A Republican could win 2016, and lose to Tim Kaine (or whoever) in 2020.

[Mister Mets]

Probably the more important question is when the USA will have second after JFK president (although its hard to call Kennedy decent follower) who will be Catholic? I guess that will be some Democratic candidate so I guess this question is not that offtopic.

There are plenty of prominent Catholic Republicans. See Kelly Ayotte, Marco Rubio and Paul Ryan. It's entirely possible the second Catholic President will be Republican.

[Mister Mets]

Put in another pitch for Seth Moulton, assuming he gets a Senate seat soon enough.

Moulton is only 37. I think it would actually be better for him to serve a few terms in congress and then serve a term or two in Markey's seat once he retires.

Serving in office a long time doesn't seem to help presidential contenders.

W was Governor for 6 years.
Obama was Senator for four.

With the buzz for Warren as Hillary's running mate, Moulton would be well-positioned to be Senator when the special election comes along. He wouldn't need to risk his congressional seat for it.

And he presumably wouldn't be able to run for President for another 8 years anyway.