MONTPELIER (AP) - Two Vermont political scientists say the lineup for the state's August primary election shows the state's Republican Party doesn't have many strong statewide candidates.

University of Vermont political scientist Garrison Nelson calls Scott Milne, the Republican businessman who is seeking his party's nomination to challenge Democratic Gov. Peter Shumlin, "the last man standing" after other potential candidates bowed out.

No incumbent governor has lost a re-election bid in Vermont since 1962.

Nelson says Milne is smart and he knows his bid is a long-shot.

Middlebury College's Eric Davis says the question is whether Milne can do better than Shumlin's 2012 Republican challenger Randy Brock, who lost to Shumlin by about 20 percentage points.

The state's lone statewide Republican officeholder, Lt. Gov. Phil Scott, is favored to win re-election.