John McCain's campaign has hired a former staffer for Rudy Giuliani to be its national field director, one of two positions created by a key adviser who took over operational control of the campaign last week.

Bill Stepien, who was a regional McCain campaign manager for New York and New Jersey and worked as Giuliani's national field director before that, will join recently named political director, Mike DuHaime.

DuHaime also worked for Giuliani, as his campaign manager during the GOP primaries.

Adviser Steve Schmidt, who has been given new authority in the McCain campaign, announced last week that he was hiring both a political director and field director to "increase our capacity to reach out to voters, build coalitions, identify supporters and ultimately turn them out to the polls on Nov. 4."

Stepien also worked as the New Hampshire political director for President Bush's 2004 campaign.

FOX News' Mosheh Oinounou contributed to this report.