Gerald Herbert, Associated Press
Mitt Romney greets supporters in Novi, Mich., after winning the Michigan primary with 41 percent of the vote.
WASHINGTON — Despite winning the popular vote in Michigan's primary, Mitt Romney will split his home state's convention delegates with second-place finisher Rick Santorum.
They each won 15 of the state's 30 delegates.
Michigan awards most of its delegates based on results in each of its 14 congressional districts — handing out two for winning each district. The other two delegates are awarded proportionally, based on the statewide vote.
Each candidate won seven congressional districts, while Romney won statewide with 41 percent of the vote to Santorum's 38 percent.
Romney leads the overall race for delegates, with 167. Santorum has 87 delegates, former House Speaker Newt Gingrich has 32 and Texas Rep. Ron Paul has 19.
It takes 1,144 delegates to win the Republican nomination for president.