Poll: Lt. Gov. Casey Cagle could face runoff in Georgia's gubernatorial race

FILE - In this Jan. 11, 2016, file photo, Georgia Lt. Gov. Casey Cagle speaks during a memorial ceremony on the first day of the legislative session at the state Capitol in Atlanta. Cagle on Monday, Feb. 26, 2018, threatened to prevent Delta Air Lines from getting a lucrative tax cut after the company ended its discount program with the National Rifle Association. Cagle, president of the state Senate and a leading candidate to succeed Gov. Nathan Deal, tweeted that he would use his position to kill a proposed sales tax exemption on jet fuel. (AP Photo/David Goldman, File)

A new poll suggests Lt. Gov. Casey Cagle may not be able to avoid a runoff in Georgia's primary elections.

The February Mason-Dixon Poll shows Cagle may fall short of the 50 percent of the vote required to avoid a runoff, despite being the leading contender in the Republican gubernatorial primary.

The poll includes a sample of 500 likely Democratic primary voters and 500 likely Republican primary voters.

Cagle tops Republican polls with a double-digit lead over other candidates at 27 percent of likely primary voters' support, according to the poll. Brian Kemp, Clay Tippins and Hunter Hill essentially tie for second place at 13, 12 and 11 percent, respectively. Michael Williams (5 percent) and Alan Urbach (1 percent) trail behind, and another 31 percent of likely voters remain undecided.