Kansas Sen. Pat Roberts and Republican primary opponent Milton Wolf have both signed a pledge to fight for repeal of the federal health care overhaul.

But Wolf was getting credit Wednesday from the Washington-based conservative group behind the pledge for signing it first.

Independent Women’s Voice announced Tuesday that Wolf signed the pledge. It calls for blocking funding to administer the health overhaul and repealing the 2010 law championed by Democratic President Barack Obama.

The group announced Wednesday that Roberts also had signed the pledge and congratulated him on following Wolf’s action.

Both candidates have criticized the health care overhaul repeatedly while campaigning.

The primary is Aug. 5. Also seeking the GOP nomination are former mail carrier Alvin Zahnter, of Russell, and homemaker D.J. Smith, of Osawatomie.