Story highlights Tim Canova is challenging ex-DNC chair Rep. Debbie Wasserman-Schultz in her Democratic primary

Canova won the support of Bernie Sanders but Canova has complained that Sanders support has been limited

(CNN) Tim Canova became one of the heroes of Bernie Sanders' anti-establishment primary crusade when Sanders endorsed his bid to challenge then-DNC chair Rep. Debbie Wasserman Schultz last April.

And on Tuesday, Canova's long-shot attempt will come to a head when he and Wasserman Schultz face off in the Democratic House primary for Florida's 23rd Congressional district. Despite Sanders' nominal blessing and the growing thrust of anti-establishment politics, Wasserman-Schultz is still favored to beat Canova -- a Sun Sentinel poll released last weekend showed her leading by 10 points.

Canova's bid was viewed by some as a proxy for the battle between Sanders and Hillary Clinton during the Democratic primary. But even as the stakes of Canova's challenge grew with Sanders' backing, Sanders' support was less forthcoming than the upstart Florida Democrat would have liked.

Canova told CNN's Wolf Blitzer on Monday that he still thinks he has "realistic chance" of winning.

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