It appears you’re talking about Nebraska’s 2nd Congressional District, often referred to as a ‘blue dot’ because it tends to vote Democrat in a state that typically votes Republican. Nebraska, along with Maine, employs a system known as the ‘congressional district method’ to allocate their electoral votes in presidential elections. Under this system, two electoral votes go to the popular vote winner, and one electoral vote goes to the popular vote winner in each Congressional district.
The 2nd district, which includes the city of Omaha, thus finds itself at the center of attention in a competitive election, as it represents a potential electoral vote for either the Republican or Democratic presidential candidate. Nebraska’s 2nd District is currently represented by Democrat Kara Eastman, who was elected in 2020. However, the district is often competitive and can swing either way.