When It Comes to Big City Elections, Republicans Are in the Wilderness

The party’s growing irrelevance in urban and suburban areas comes at a considerable cost, sidelining conservatives in centers of innovation and economic might.

When Jerry Sanders finished his second term as mayor of San Diego in 2012, he was the most prominent Republican city executive in the country. A former police chief close to the business community, Mr. Sanders appeared to be a political role model for other would-be Republican mayors, a moderate who worked with the Obama administration on urban policy and endorsed gay marriage at a pivotal moment. These days, Mr. Sanders said, Republicans are out of touch with diverse metropolitan areas. He said Republicans appeared to lack “real solutions” to issues like crime, and lamented the party’s exclusionary message that drives off young people, Hispanics and gay voters in cities like his. “I don’t think the right has kept up with the times,’’ Mr. Sanders, 70, said in an interview. He said he renounced his party affiliation on Jan. 7, the day after the mob attack on the Capitol.