Prior to a statewide senate election

Prior to a statewide senate election, three polls are conducted concerning a particular candidate's popularity. In the first poll, 700 of 1520 voters favor the candidate. In the second poll, 1235 of 2500 favor the victory based on these polls. candidate. In the third poll, 1799 of 3500 voters favor the candidate. Find 95% confidence intervals for the proportion of voters in favor of the candidate for all three polls. Discuss the candidate's prospects for The 95% confidence interval for the first poll is