Mitt Romney’s campaign for the Republican presidential nomination got a boost after winning both two state primaries Tuesday night.

With 72 percent of precincts reporting, Arizona named Romney the projected winner of the state with 48 percent of total votes. Former Pennsylvania Sen. Rick Santorum came in second with 26 percent. Former Speaker of the House Newt Gingrich came in third with 16 percent and Texas Rep. Ron Paul held eight percent of the votes.

Michigan’s primary was a little more uncertain. Santorum and Romney traded first and second places as votes began to come in. 

It was not until 80 percent of precincts were reporting that Romney was named the projected winner with 41 percent of the votes. 

Santorum followed with 38 percent, while Paul placed third with 12 percent. Gingrich came in fourth with 7 percent.

Both Romney and Santorum focused a lot of attention on Michigan in the weeks prior to the primaries. For Romney, the state had a lot of history. His father, George, was once the governor of Michigan, and Romney was born in the state. 

For Santorum, a win in Michigan would have helped to propel him forward to close the distance between him and current leader Romney. Before Tuesday, Romney held 165 delegates to Santorum’s 44.

“We didn’t win by a lot, but we won by enough and that’s all that counts,” Romney said to a group of supporters in Michigan after he was declared the victor.

Next week is another major stop in the road to the presidential election. March 6, known as “Super Tuesday,” will feature ten states holding their primaries. By this time next week, it’s possible the Republican candidate will be named.