A new poll reveals no clear front-runner in the Republican race for Oklahoma's 5th District U.S. Representative seat, six weeks from the June 24 primary.

A News 9 survey of 671 likely Republican voters shows three candidates received double-digit support in the poll, including Corporation Commissioner Patrice Douglas (11.6 percent), state Sen. Clark Jolley (11.4 percent) and state Rep. Mike Turner (11.2 percent).

Three candidates had single-digit support, including former state Sen. Steve Russell (7.4 percent), former state Rep. Shane Jett (5.5 percent) and former congressional staff member Harvey Sparks (3.7 percent).

Nearly half, 49.1 percent, are still undecided, according to the poll. 

"This race is up for grabs," said Bill Shapard, CEO of SoonerPoll.com. "Voters are unaware of these candidates for the most part."

He said, "They have not spent a lot of money, time or resources yet to reach the voters of the 5th District.

Many of the candidates had no clue they would be running for Congress six months ago."

The district's seat opened up when current Congressman James Lankford declared he would run for retiring U.S. Sen. Tom Coburn's unexpired term.

One candidate will have to get more than 50 percent of votes cast to avoid a run-off. The Republican winner will meet a Democrat challenger and three Independent challengers in the Nov. 4 election.

SoonerPoll conducted the survey between May 5 and May 10. Respondents were selected at random using landlines and cell phones. Results were weighted by gender, age, cell phone/landline collection and Congressional district, and then stratified using a model of previous primary elections. The poll has a margin of error of plus or minus 3.77 percentage points.