A Republican-endorsed business executive is officially taking on incumbent St. Paul Mayor Chris Coleman.

Eva Ng filed her candidacy papers with the Ramsey County Elections Office on Tuesday afternoon, the last day to do so.

Although she is endorsed by the city GOP, Ng is conducting a nonpartisan campaign. She describes herself as a center-right conservative who wants to make the city more friendly to businesses.

Along with her announcement, Ng urged Coleman to join her in signing a pledge to focus only on serving out the full term of mayor if elected, a dig at his gubernatorial ambitions.

Coleman, who is wrapping up his first term and holds the DFL endorsement, doesn't "do gimmicks," said campaign manager John Stiles. It's no secret, he added, that Coleman has been thinking about running for governor.

"We welcome her to the race and look forward to having a conversation about the future of the city," Stiles said.

Other mayoral candidates include Sharon Anderson and Bill Dahn.