SAN FRANCISCO (AP) — From Florida to Virginia, Massachusetts to California, candidates and political parties seeking to squeeze every vote from a divided electorate are targeting America’s newest citizens. It’s a relatively small bloc but one that can be substantial enough to make a difference in razor-close presidential swing states and competitive congressional races.

In Florida, which President Barack Obama won by less than 5 percentage points four years ago, a new analysis of U.S. Census data shows people who naturalized as Americans since 2000 make up 6 percent of the population of voting-age citizens. For months, the Obama campaign has been sending volunteers to citizenship ceremonies to register people and canvassing Miami-area neighborhoods where immigrant families live.