The objective of this study was to determine the factor that influence changes of ballot paper to e-voting in Thailand general election. The mathematical analysis method was applied which is factor analysis: Exploratory Factor Analysis (EFA) for the preliminary model and Confirmatory Factor Analysis (CFA) for the measurement model. Then used Structural equation model (SEM) to evaluate consistency of the model fit. This study examined the e-voting adoption factor according to 12 variances. A total 342 responses were collected. The analysis results of EFA indicate that the factors could be divided into three main groups: Infrastructure consisted of 8 factors, E-participation consisted of 2 factors, and Human capital consisted of 2 factors. Then CFA was confirmed the hypotheses which assessed by convergent validity. Composite reliability and average variance were computed. The result showed that interrelationship of the construct was pass the criteria. The last analysis: SEM was measured the structure model and it fit to conditions. In this regard, all 2 models confirmed that these 3 factors had the impact to Thailand e-voting adoption which the Infrastructure (β = 0.84) had the highest loading factor, Human capital (β = 0.62) and E-participation (β = 0.62) had the same loading factor.