In South Snohomish County, all of the state senators and representatives whose seats are up for election say they will seek another term.

Challengers are lining up to make at least four incumbents work for it.

Sen. Dave Schmidt, R-Everett, has attracted two Democrat challengers so far.

Rep. Mark Ericks, D-Bothell, Rep. John Lovick, D-Mill Creek, and Rep. Hans Dunshee, D-Snohomish, will each face an opponent.

While the official filing period is July 24-28, candidates who announce their intentions and raise money for campaigns must register with the Public Disclosure Commission, the state agency that tracks political contributions.

So far, the only legislative race starting with a September primary is in Schmidt’s 44th District, which serves Mill Creek and surrounding areas. Lillian Kaufer of Snohomish and Steve Hobbs of Lake Stevens are running as Democrats. The winner will try to unseat incumbent Republican Schmidt in the November general election.

The two state representative positions in the 44th have both incumbents running for re-election. Incumbent Democrat Lovick is being challenged by Republican Robert Legg of Lake Stevens. In the other race, Dunshee, a Democrat from Snohomish, is once again being challenged by Republican Mike Hope of Everett. Hope ran unsuccessfully against Dunshee in 2004.

In the 1st Legislative District, first-term incumbent Democrat Ericks is defending his seat from challenger Mark Davies, a Republican and Boeing Co. information systems business analyst.

The 1st District serves Bothell and unincorporated Snohomish County near Mill Creek.

Rep. Al O’Brien, D-Mountlake Terrace, is already going door-to-door to earn a sixth term in the House. As of the Enterprise deadline, he did not have any challengers filed with the PDC, but O’Brien said he is not taking any chances.

Enterprise writers John Santana and Jenny Lynn Zappala contributed to this report.