(CNN)–The 21-month marathon is over: Voters head to the polls today to elect the 44th President of the United States. In the latest installment of CNN=Politics Daily: Sens. Barack Obama and John McCain hold their last round of rallies in key battleground states, as CNN’s Suzanne Malveaux and Ed Henry take a look at what has been the longest presidential campaign in history.
Plus: Are Republicans about to become an endangered species? CNN’s Jim Acosta breaks down the balance of power in the House and Senate and why GOP anxiety is at an all-time high.
And: Broken machines and long lines are just some of the issues voters are facing at the polls. CNN’s Carol Costello breaks down common Election Day problems, and offers helpful tips to the affected in her voter survival guide.
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