A new poll shows the race between Republican Mark Sanford and Democrat Elizabeth Colbert Busch tightening, with both candidates at 46 percent entering the final days of the 1st Congressional District campaign.

The poll from Red Racing Horses, which bills itself as “a Republican-oriented online community,” also has 7 percent of voters undecided. The margin of error was plus-or-minus 5 percent.

The automated phone survey of 650 likely voters was conducted between Monday and Wednesday.

The results indicate the contest is getting closer as the candidates approach next Tuesday’s special election.

A poll conducted April 19-21 by the Democratic-leaning Public Policy Polling group, which polled likely voters in the wake of the trespassing accusation against ex-GOP governor Sanford, showed Democrat Colbert Busch had pulled out to a nine-point lead.

Meanwhile, the candidates continued to seek voters across the five-county coastal district that stretches from Charleston to Beaufort counties.

Colbert Busch has a new bus — painted with “Elizabeth means business” — and will make 15 stops in six towns during the next four days. Her tour begins at 11 a.m. Friday in Beaufort and will arrive in Charleston on Saturday with a 9 a.m. stop at the city’s farmers market at Marion Square. She then will visit the Summerville Farmers Market at 10:30 a.m., the McClellanville Shrimp Festival at 1:30 p.m., and a Cinco de Mayo Festival at the Charleston Visitors Center at 6:45 p.m.

Sanford also will make several campaign stops Friday, including an 8:30 a.m. stop at the Sea Cow Eatery on Edisto Beach, a 1:30 p.m. meet-and-greet at the Lakehouse on Seabrook Island, and three Johns Island stops: 2:30 p.m. at Newton Farms; 3 p.m. at Rosebank Farms; and 3:45 p.m. at Cordray’s Grocery and Feed.