New Jersey’s gubernatorial primary on Tuesday will set up a general election that will be closely watched as a barometer for how voters are responding to the Trump administration. Six Democrats are facing off for their party’s nomination to succeed term-limited Democratic Gov.

New Jersey voters are heading to the polls Tuesday for the primary election, choosing party nominees in the gubernatorial race. This year’s contest is uniquely expensive and competitive, with voters already signaling greater interest than with recent primaries.

New Jersey has a closed primary system, meaning only Democrats and Republicans can vote for their party’s nominees to run in the general election. Registered independent voters may declare for either party on primary Election Day to be able to cast a ballot, then switch back to being listed as an Independent.