Voters on Tuesday will decide all 120 seats and whether to let Democrats retain legislative control; Democrats control the Assembly 50-30 and the Senate 22-18.

Polls will be open from 6 a.m. to 8 p.m.

Voter turnout is expected to be low. In 2003, the last time all 120 seats were up, 34 percent of voters cast ballots.

The state has 40 legislative districts, each electing two Assembly members and a senator. In all, 267 candidates are running for the 120 seats.

Most races aren’t expected to be competitive, since most districts favor either Democrats or Republicans.

The Senate battle between Democratic Sen. Ellen Karcher and Republican Assemblywoman Jennifer Beck in the 12th District, which spans Mercer and Monmouth counties, is the most expensive and contentious. The Assembly races in that district are also heated.

Karcher has raised more money than any other state candidate, according to the latest reports released by the Election Law Enforcement Commission. She’s raised at least $2.1 million, most from Democratic Party leaders, while her opponent, Republican Assemblywoman Jennifer Beck, has raised at least $333,000.

Karcher’s reports show that since Sept. 28 she’s spent about $1.6 million on ads, but Karcher’s has recently emphasized how she’s been touring the district meeting with voters to discuss issues “like reducing property taxes and continuing the fight for ethics reform.”

Beck said she may be outspent, but not outworked.

She has vowed to continue her “advocacy for lower taxes, lower spending and a school funding formula that is equitable to all children in New Jersey.”

Fierce races are being waged in the Assembly and Senate races in the 1st District, which includes Cape May and Cumberland counties; the 2nd District, which includes Atlantic City; and 8th District, which covers Burlington County.

The 14th District Assembly campaign in Mercer and Middlesex counties is also expected to be tight.

Attorney General Anne Milgram said about 450 deputy attorneys general will be working throughout the state on Tuesday to ensure a fair election and help county election officials resolve voting-related legal issues.

Milgram said the deputies will be assigned to all counties, with 44 assigned to the 29th Legislative District in Newark, where six candidates are running for the Senate and 10 for the Assembly. Twelve deputy attorneys general have been assigned to Hoboken, where a special council election is being held.

“We are committed to protecting the right to vote and the integrity of the election,” Milgram said. “There is no greater responsibility than ensuring fair elections. We will be vigilant in guarding against the potential for fraud and we will be on-call to resolve any potential issues regarding voting rights.”