BALTIMORE— The accusations that Mayor Sheila Dixon used holiday gift cards for the needy during personal shopping sprees may sound like a minor embarrassment at worst, a small-time case of a politician enjoying the perks of power.

For Dixon, the stakes could not be higher.

Dixon, 55, will put her political future in the hands of a jury Monday, when her trial on theft charges begins. She's accused of asking wealthy developer pals to donate gift cards worth thousands of dollars, saying they would be given to poor families _ then using them to buy electronics at Best Buy, clothes at Old Navy and knickknacks at Target. If convicted, she would be tossed out of office.

She faces a separate trial later on perjury charges stemming from accusations that she didn't report gifts from her ex-boyfriend, a real estate developer who received tax breaks from the city.

The allegations have bruised Dixon since they surfaced in January, leaving her isolated and politically vulnerable. President Barack Obama ignored her during his pre-inaugural whistle-stop tour, and her relationship with Gov. Martin O'Malley is lukewarm at best. Key city positions, including health commissioner, are vacant.

A plea deal is not an option. Under state law, she can't remain in office if convicted of any felony or misdemeanor related to her official duties. The city council president would become mayor if Dixon is convicted.

Through her spokesman, Dixon declined an interview request. She took just a handful of questions about the trial during a recent meeting with reporters.

"I have no reason that I'm going to resign," Dixon said, noting that she has received "tremendous support from citizens."

However, many residents are disappointed and embarrassed.

"I don't think if you're the mayor, you're setting a good example by going on trial for gift cards," said Kevin Brown, 21, of Baltimore. "We're supposed to look up to you."