Little Rock, Arkansas (CNN) – The campaigns for Sen. Blanche Lincoln and Lieutenant Gov. Bill Halter are in full swing Tuesday as each candidate in the Arkansas Senate Democratic primary tries to get enough votes to break the requisite 50-percent mark to avoid a run-off.
Lincoln and Halter voted and spent much of the day trying to shore up support or win over voters.
"We had 25 hours of non-stop campaigning. And [it's] culminated [in] coming here to vote," Halter said at the Central Baptist Church – where he voted. "It's been terrific."
Lincoln, voting at the St. James United Methodist Church, expressed a similar sentiment.
"I've had a wonderful reception across the state," she said to CNN Senior Congressional Correspondent Dana Bash.
And yet, the slams that have marked much of the race were still on display with just hours to go before poll closings.
"I've said all along, from the beginning of this campaign, that if you send the same people to Washington, you're guaranteed to get the same result," Halter said. "We believe that there's improvements that can be made. There are very clear, distinct differences among the candidates."
For her part, Lincoln played up her experience.
"I think voters in Arkansas are looking for a candidate who is going to work hard and bring results. And that's exactly what I have done and what I will do," the senator told Bash. "I think I'm the best candidate for the results that they want. I've got a proven record, I've worked hard on the issue here that is jobs and the economy and that's what people want."
The candidates' supporters have been similarly engaged.
"With the help of hundreds of Arkansas volunteers, the Lincoln campaign is communicating directly with voters to get out the vote," Lincoln campaign Communications Director Katie Laning Niebaum said in a statement. "In the past few weeks, Lincoln campaign staff and volunteers have made half-a-million calls to voters, and we head into the Primary Election with a strong grassroots organization."
Halter supporters are also out in force on primary day. Labor unions are among the groups that are backing him. Their members are spending the day visiting work sites to continue to promote the candidate.
On Monday, members of the American Federation of State, County and Municipal Employees, or AFSCME, made calls to members to urge them to head to the polls and vote for Halter.
Commenting on their efforts for the month, Communications Director for Arkansas' AFL-CIO Justin Nickels said, "We expect we can hit 100,000 people" through phone calls.