Chuck Reed could be the first San Jose mayor in two decades to face a serious reelection challenge if Assemblyman Joe Coto decides to run for the city’s top post. Team Coto has been putting out feelers to see if there’s enough interest in their man, who will be termed out of representing the 23rd Assembly District in 2010. Officially, Coto’s not interested in taking on Reed. He established an officeholder account in November for a state Senate run. Question is, would genial Joe undertake a bruising battle to shorten his commute? “Conversations have been held,” says one connected insider. The Labor camp believes Reed is vulnerable because of the policing controversies under Reed’s mayorship and the unpopularity of SJPD Chief Rob Davis in the Latino and downtown business communities. Other prospective challengers could include Reed’s adversary on the council, Nora Campos, or a recycled Cindy Chavez, who one spy says planted herself in a seat reserved for office-holders during George Shirakawa Jr.’s swearing in two weeks ago. Any ambitions of unseating Reed, however, could be dampened if campaign donors remain frugal in the current economy. And that big sucking sound in the distance is the 2010 governnor’s race, in which candidates will be tripping over themselves to collect checks from local donors.