What to watch in New Hampshire's primary on Tuesday night

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Democratic presidential candidate Sen. Bernie Sanders, I-Vt., accompanied by Rep. Alexandria Ocasio-Cortez, D-N.Y., left, takes the stage at campaign stop at the Whittemore Center Arena at the University of New Hampshire, Monday, Feb. 10, 2020, in Durham, N.H. (AP Photo/Andrew Harnik)

The Democratic presidential race is deeply unsettled heading into the New Hampshire primary. It may be up to the state to put some structure around the chaotic contest, with Iowa being unable to declare a clear winner.

What to watch Tuesday night as the returns roll in:

IS THERE AN ENTHUSIASM GAP?

Only slightly more Democrats voted in Iowa's caucuses last week than in 2016 and that has party operatives worried about voter enthusiasm going into November. Will New Hampshire's Democratic voters surge to the polls or also stay home?

New Hampshire's secretary of state has predicted a healthy 292,000 Democratic voters, which would be about 40,000 more than voted in 2016.

The turnout question hangs heavily over the field for two reasons. The start of Democratic voting in the long primary season coincides with a rise in anxiety among that party's voters about the presidential election and an increase in confidence among Republicans. Low turnout would be a sign of Democratic weakness at the ballot box, at least for now.

Second, the candidacy of Vermont Sen. Bernie Sanders is premised on the theory that his ultra-liberal platform will turn out new voters, but that didn't happen in Iowa. Whether more voters cast ballots in New Hampshire may carry big implications for Sanders' argument.

DOES A CLEAR ALTERNATIVE TO SANDERS EMERGE?