MONTREAL -- As Quebec begins a provincial election campaign, with a vote scheduled for Sept. 4, here are some key issues and the stated positions, so far, of the three largest parties: the Liberals, the Parti Quebecois and the Coalition for Quebec's Future.

--Student strikes:

Liberals say their $254-a-year, seven-year tuition increases will improve universities while expanded loans and bursaries programs will actually leave the poorest students better off. Liberals have mostly refused to budge in face of protests, although their original proposal was for $325-a-year increases over five years. Their controversial Bill 78 would reopen classes in mid-August for one-third of students still on strike, while setting out severe fines for anyone blocking schools.

PQ has been more supportive of protesters and would cancel the hikes, propose smaller increases pegged to inflation and hold provincial summit on university funding.

The Coalition has positioned itself to occupy the middle ground, proposing more modest annual tuition increases of $200 a year over five years. Party originally voted for Bill 78 but now says it created unnecessary tension and wants some provisions suspended.

--Ethics:

After two years of intense pressure, Charest Liberals called a corruption inquiry that is now probing malfeasance in construction industry and its ties to political parties and organized crime. Before that, they had announced plans to hire more oversight officials at Transport Department; tougher fines for engineering firms; stricter political fundraising laws; new rules for public-works tendering; and new anti-corruption squad that has since made numerous arrests.

PQ making ethics central plank of platform. It wants tougher legislation preventing companies guilty of tax evasion from winning public contracts. It also proposes new measures to combat voter cynicism including: citizen-initiated referendums, fixed election dates, political donations limited to $100 a year, and the right to vote at age 16.

The Coalition wants new integrity commissioner to oversee government contracts, and new powers for prosecutors, as part of a "big cleanup." It also promises fixed election dates.

--Northern development:

Liberals will tout Plan Nord, a sweeping plan that sets out $80 billion in public and private investments in mining, energy, infrastructure and conservation projects over a quarter-century.

PQ accuses Liberals of selling off Quebec's natural wealth at cut-rate prices and is calling for a 30 per cent surtax on profits from non-renewable resources.

The Coalition has also taken aim at the signature plan, alleging windfall will primarily benefit foreign companies and Quebec mining firms cosy with Liberals.

--Sovereignty:

Liberals have long stood as the major federalist option in Quebec. Party is frequently accused by opponents of being subservient to Ottawa. However, it has clashed publicly with federal government over issues like long-gun registry, omnibus crime bill and changes to health transfers.

PQ is offering no timetable for third referendum on independence. Instead, party plans to pick fights with Ottawa in seeking more power over immigration, environment, agriculture and revenue collection. PQ hopes such battles will generate support for independence. Eventually, Quebecers themselves could initiate referendum, under plan to allow California-style plebiscites. People would need to collect 850,000 signatures to hold provincial vote on a given topic.

The Coalition, led by former PQ minister Francois Legault, vows to shelve any referendum on independence for 10 years to focus on building economy. But many federalists remain wary of the once-passionate sovereigntist.