Republican candidates compete in Michigan and Arizona (live primary updates) With Super Tuesday just a week away, the Republican presidential candidates are competing for delegates in the Arizona and Michigan primaries. Follow our live blog for the latest news out of Arizona and Michigan. Also click: Arizona primary pre-game analysis, full results Michigan primary pre-game analysis, full results Michigan, Arizona primary day: Is Santorum gaining? Michigan primary: 5 counties to watch Why the Michigan primary means momentum for Romney The focus is on Michigan today, with front-runners Mitt Romney and Rick Santorum both spending their final hours campaigning in the Wolverine State. Delegates are also up for grabs in Arizona, where John McCain is holding an event for Romney this evening. Newt Gingrich spent the day in his home state of Georgia, while Ron Paul set up camp in Springfield, Va. A quick look at today on the campaign trail: Romney receives a hat from his father's gubernatorial campaign from a campaign volunteers in Livonia, Mich. Romney is hoping to win tonight's primary in Michigan, where his father served as governor from 1963 to 1969. (Gerald Herbert - AP) Santorum hugs wife Karen during a campaign stop at the New Beginnings Restaurant in Kentwood, Mich. (JIM YOUNG - REUTERS) Gingrich, accompanied by wife Callista, campaigns in Dalton, Ga. Gingrich skipped Michigan and Arizona today to focus on Super Tuesday, when he hopes to win his home state of Georgia. (Evan Vucci - AP) Ron Paul may have skipped Michigan, but his supporters haven't. A Paul supporter stakes out Santorum's motorcade in Grandville, Mich. More photos: Michigan, Arizona voters go to the polls