WAUKEE, Iowa – Just five months before they cast the first votes of the presidential campaign, Republican voters across Iowa are still not convinced that any one candidate running for the party’s nomination has the chops to beat President Obama.

At campaign events and meet-and-greets with candidates across the state, few voters say they have made up their minds to back a specific candidate — and even those who have picked one admit that they would welcome a newcomer to the race.