With a year to go until the midterm elections, immigration reform advocates hoping to jump-start debate on Capitol Hill are planning to target a handful of Republican lawmakers most likely to suffer political consequences next year if Congress fails to act on immigration reform.

A campaign set to be announced Thursday will marry the financial and political power of the AFL-CIO and SEIU labor unions with smaller grass-roots immigrant advocacy groups, including America’s Voice, PICO National Network, Mi Familia Vota and CASA in Action, to target nine House GOP lawmakers who support establishing a way for eligible immigrants to apply for U.S. citizenship.