NDP president Brian Topp has been a backroom war roomer and party strategist for decades. On Monday, after NDP Leader Jack Layton announced he will step aside to fight for his health, Mr. Topp stepped up to the plate to communicate the party's message and oversee its leadership transition.

OTTAWA—When Brian Topp was elected president of the New Democratic Party, he hoped to lead a policy renewal so that his party could show Canadians they were capable of forming the next federal government. He didn’t expect to have to lead the process for a new interim leader. But as Jack Layton is battling a new cancer and has stepped aside to focus on his health, political observers and those close to him say Mr. Topp is a strong leader who’s one of the “most stalwart” NDP staffers in the country.
NDP president Brian Topp has been a backroom war roomer and party strategist for decades. On Monday, after NDP Leader Jack Layton announced he will step aside to fight for his health, Mr. Topp stepped up to the plate to communicate the party's message and oversee its leadership transition.

OTTAWA—When Brian Topp was elected president of the New Democratic Party, he hoped to lead a policy renewal so that his party could show Canadians they were capable of forming the next federal government. He didn’t expect to have to lead the process for a new interim leader. But as Jack Layton is battling a new cancer and has stepped aside to focus on his health, political observers and those close to him say Mr. Topp is a strong leader who’s one of the “most stalwart” NDP staffers in the country.