This research analyzes the impact of budgeting realization on regional functions on the probability of re-election of incumbents in Indonesia in 2014-2020 with a final sample size of 3,440 observations. Through a probit regression analysis approach and case studies in several regions in Indonesia, this research explores the relationship between the size of budget realization for certain functions in the region and the chance of the incumbent returning in the general election. The results of the research show that there is a significant positive and negative correlation between the realization of budgeting for the functions of education, public facilities, and regional culture and tourism and the level of incumbent re-election. These findings highlight the role of budget realization in influencing public perceptions of incumbent performance and regional head election strategies in maintaining their position. The implication of these findings is the need for a deeper understanding of the dynamics of budget politics at the local level as well as the need to ensure transparency and accountability in the use of public budgets to minimize the potential for misuse for political interests. Researchers are expected to be able to analyze further the factors that can influence the incumbent's re-election. Keywords: Regional Function Budget, Regional Head Election, Regional Government, Incumbency