Editors' pick: Originally published Nov. 1.

Stocks slipped on Tuesday in a weaker start to November as uncertainty over the upcoming presidential election weighed on Wall Street. 

The S&P 500 was down 0.2%, the Dow Jones Industrial Average fell 0.16%, and the Nasdaq declined 0.23%. The S&P 500 has fallen for the past six sessions. 

Conflicting polls created uncertainty over the outcome of the U.S. presidential election. An NBC/SurveyMonkey poll showed Democratic presidential candidate Hillary Clinton's 6-point lead remained after concerns over her emails were raised again on Friday. A separate ABC poll showed Republican presidential candidate Donald Trump with a 1-point lead. U.S. voters will head to the polls on Nov. 8. 

Manufacturing activity in the U.S. in October rose at a faster pace than expected, according to the latest ISM Manufacturing Index. The measure increased to 51.9 last month from 51.5 in October. Analysts expected a reading of 51.7.

A separate reading on the manufacturing sector hit a one-year high as increases in output and new orders drove manufacturing activity. The final Markit PMI reading for October increased to 53.4 in its final reading for the month, up from initial estimates of 53.3.

U.S. construction spending fell 0.4% in September, according to the Census Bureau. Analysts had expected a 0.5% increase after spending declined 0.5% in August.

Manufacturing activity in China improved in October to its best level in two years. The official manufacturing purchasing managers index rose to 51.2 in October, up from 50.4 in September, according to the National Bureau of Statistics. The measure has improved for three straight months. Improvement in the sector comes as a relief after stretches of weak growth in the manufacturing-focused economy.

If you liked this article you might like

Dow, S&P 500 Set New Records as Fed Moves to Unwind Balance Sheet

Stocks In Negative Territory as Chances for December Hike Surge

The Wait for 'Milestone' Fed Meeting Keeps Stocks in Flux

The 6 Medications Being Used to Tackle the Opioid Epidemic