In an election for President of the United States, today, Labor Day, business provocateur Donald Trump narrowly defeats Hillary Clinton, Joe Biden, Bernie Sanders and Al Gore, in head-to-head matchups, according to nationwide polling conducted by SurveyUSA.

Today it's:

* Trump 45%, Clinton 40%. (There is a 20-point Gender Gap; Trump leads by 18 points among seniors.)
* Trump 44%, Sanders 40%. (Trump leads by 10 among independents and by 6 among moderates.)
* Trump 44%, Biden 42%. (Trump leads by 10 among the best educated; Biden leads by 17 among the least educated.)
* Trump 44%, Gore 41%. (Trump leads by 12 among men and by 18 among voters age 50+.)

Among a subset of registered voters who tell SurveyUSA that they pay "a lot" of attention to politics, the scale tilts to the right: Today it's:

* Trump 54%, Clinton 36%.
* Trump 53%, Sanders 39%.
* Trump 53%, Biden 37%.
* Trump 54%, Gore 36%.

Voters were asked whether they support a given Democrat "enthusiastically," "with reservations," or, whether they are "holding their nose" voting for a particular candidate.

* 57% of Clinton voters say they are voting enthusiastically.
* 53% of Sanders voters say they are voting enthusiastically.
* 49% of Biden backers say they are voting enthusiastically.
* 45% of Gore voters say they are voting enthusiastically.

By contrast:

* 8% of Clinton supporters say they are holding their nose.
* 8% of Sanders voters say they are holding their nose.
* 9% of Biden voters say they are holding their nose.
* 12% of Gore voters say they are holding their nose.

Voters were asked, regardless of whether they were Democrats or Republicans, and regardless of whom they might vote for in a primary, who they thought would be the major party nominees. Today, Labor Day, voters handicap the primary contests this way:

* 44% say Clinton will be the Democratic Party nominee.
* 22% say Biden will be the nominee.
* 14% say Sanders will be the nominee.
* 3% say Gore.
* 9% say someone else.

* 30% say Trump will be the Republican party nominee.
* 20% say Jeb Bush will the the GOP nominee.
* 14% say Ben Carson will be the GOP nominee.
* 6% say Ted Cruz will be the nominee.
* 4% say Marco Rubio will be the nominee.
* 4% say John Kasich will be the nominee.
* 3% say Carly Fiorina will be the nominee.
* 2% say Scott Walker will be the nominee.

Cell-phone and home-phone respondents are included in this survey. SurveyUSA interviewed 1,000 USA adults 09/02/15 and 09/03/15. Of the adults, 900 were registered to vote. Of the registered voters, 58% (522) pay "a lot" of attention to politics. This survey was conducted using blended sample, mixed-mode. Respondents reachable on a home telephone (62% of registered voters) were interviewed on their home (landline) telephone in the recorded voice of a professional announcer. Respondents not reachable on a home telephone (38% of registered voters) were shown a question on their smartphone, tablet or other electronic device. Cell respondents, as is typically the case, vote more Democratic than do landline respondents. Among just the universe of cell-phone respondents, Clinton defeats Trump by 16 points; Sanders defeats Trump by 12 points; Biden defeats Trump by 17 points; and Gore defeats Trump by 17 points. The more cell-phone respondents a pollster includes in its "mix" of voters, the more Democratic the poll results will be.