Jane Sanders is central in her husband's surging campaign

The uplifting spot for Bernie Sanders features sunny images of his packed rallies over a soundtrack of Simon and Garfunkel’s “America.”

Nine months into his insurgent presidential campaign, that ad stands out as a symbol of Bernie Sanders’ effort to spark a grassroots political movement competing with the more traditional campaign of Hillary Clinton.

[...] Jane Sanders’ hand in the final product shows her influence in the campaign — one that may increase as she headlines more events on her own.

Along the way, Jane Sanders, 65, has done everything from buying the office furniture to helping prep for debates.

Sanders has been deeply involved in her husband’s political career practically from the moment they met, when he was running for mayor of Burlington, in 1981.

Brooklyn-born like her husband, Jane Sanders said she first became aware of injustices as a child, when her father, who suffered health problems for years after breaking his hip, couldn’t get good medical care until her brother started earning enough money to pay for it.