The 50 or so MPs standing for Labour's shadow cabinet will discover their fate on 7 October. As well as Harriet Harman, already elected as deputy leader, four of the five leadership contenders will be offered roles (Diane Abbott is unlikely to run). Add to the list Douglas Alexander and Alan Johnson. Here are some other names to look out for.

Five to watch for this time

Jim Murphy MP for East Renfrewshire since 1997. Age: 43
Potential job: shadow Northern Ireland secretary

This Glasgow-born Catholic MP and former Scottish secretary under Gordon Brown is exceptionally well regarded by Labour colleagues of all factions. A former NUS president, he has a hinterland and is captain of the parliamentary football team. He is an homme sérieux who helped organise the papal visit, served as a minister in the Cabinet Office, for employment and for Europe, and was voted minister of the year by parliamentarians (House Magazine award). He is believed to have been underpromoted under both Tony Blair and Brown.

David Lammy MP for Tottenham since 2000. Age: 38
Potential job: shadow Cabinet Office minister

Lammy was elected in a by-election in 2000, and was soon serving under Blair. His ministerial career continued under Brown, though he never made the cabinet. Now, his profile is expected to rise again as he stands for the shadow cabinet while also running Ken Livingstone's London mayoral bid. Lammy is articulate and popular in London, and some MPs believe it is important that there be a black as well as a female presence in the shadow cabinet.

Yvette Cooper MP for Pontefract and Castleford since 1997. Age: 41
Potential job: shadow health secretary

Cooper is tipped to eclipse her husband, Ed Balls, and become shadow chancellor, especially if David Miliband becomes leader. Why? Because Balls opposed the Alistair Darling plan to halve the deficit in four years, a strategy endorsed by Miliband Sr. Whether or not this comes to pass, Cooper remains the most senior woman other than Harriet Harman likely to be given a leading role. A "darling" of the Parliamentary Labour Party whom some tip to top the poll and one day run for the leadership.

Jack Dromey MP for Birmingham Erdington since 2010. Age: 62
Potential job: shadow work and pensions secretary

Dromey, former deputy general secretary of the Transport and General Workers' Union, is likely to join his wife, Harriet Harman, in the shadow cabinet. Dromey, who stands down as party treasurer this month, infuriated Blair in 2006 when he revealed that he was unaware of certain donations to Labour, a declaration that helped fuel the "cash for peerages" scandal that brought police into No 10. He remains close to Brown.

Stephen Twigg MP for Liverpool West Derby since 2010 (Enfield Southgate 1997-2005). Age: 43
Potential job: shadow development minister

When Twigg unexpectedly beat Michael Portillo in the 1997 Labour landslide, the moment was so celebrated that books were written about Portillo's defeat. Twigg looked as shocked as everyone else, and his modesty makes him popular in the party still. Before losing his seat in 2005, this civil libertarian was a minister for four years; he worked with the late Robin Cook to reform parliament. He ran the Foreign Policy Centre before returning to the Commons in May.

Five of the new intake to watch

Rachel Reeves Leeds West. Age: 31
One day? Shadow chief secretary to the Treasury

One of the brightest of the new intake, Reeves is an economist with a rare gift for explaining complex theories in simple terms. The state-educated Oxford graduate worked at the Bank of England and the British embassy in Washington, DC, as well as Halifax Bank of Scotland. She is the first female MP to represent any of the Leeds constituencies since Alice Bacon, who was first elected in 1945. Reeves is on the business, innovation and skills select committee.

Chuka Umunna Streatham. Age: 31
One day? Shadow justice minister

The smooth-talking lawyer from the "Compass left" of the party is one of the youngest MPs in parliament and occasionally tipped as a future leader. Umunna laughs off frequent comparisons to Barack Obama, but don't be fooled: he is ambitious and has already impressed colleagues on the Treasury select committee. He is well regarded by leading figures in the party, including Tessa Jowell and Harriet Harman.

Michael Dugher Barnsley East. Age: 35
One day? Shadow employment minister

Firmly of the "old right" of the party, Dugher was head of policy for the AEEU (the Amalgamated Engineering and Electrical Union, now merged into Unite) before becoming a special adviser to Geoff Hoon at Defence, and then an adviser to Brown at No 10. Raised in Yorkshire, he narrowly lost out to Ed Miliband for selection in Doncaster before gaining a seat in neighbouring Barnsley.

Gloria De Piero Ashfield. Age: 37
One day? Shadow equalities minister

De Piero's intelligence and fierce Labour tribalism should not be underestimated just because of her status as a lads' mag pin-up girl or her GMTV past. She worked her way up through serious broadcast journalism at ITV and the BBC before joining the popular morning show. She was brought up in a working-class area of Bradford by Italian immigrant parents.

Rushanara Ali Bethnal Green and Bow. Age: 35
One day? Shadow housing minister

An East Ender who grew up in Tower Hamlets, Ali moved with her family from Bangladesh to London at the age of seven. She became a governor at Tower Hamlets College, where she studied, and is now a commissioner on the London Child Poverty Commission and a trustee of the Paul Hamlyn Foundation. She is better liked in the Commons than her predecessor in Bethnal Green and Bow, George Galloway.