ST. PAUL, Minn. (AP) — Likely GOP presidential nominee John McCain and his running mate, Alaska Gov. Sarah Palin, are traveling to Mississippi today to check on people getting prepared for Hurricane Gustav.

Their trip comes just as delegates are preparing for the Republican National Convention, which begins Monday.

Aides say McCain and his wife, Cindy, will join Palin in traveling to Jackson, Miss., today at the invitation of Mississippi Gov. Haley Barbour. The storm could hit the United States as early as Monday afternoon.

The McCains and Palin will receive a briefing at the Mississippi Emergency Management Agency — a permanent operations center monitoring hurricane response.