Option 1: A national political party is defined by the percentage of total votes polled in two or more states. This means that if a political party receives at least 4% of the total votes in two or more states, it can be classified as a national party.

Option 2: The capital city is not the determining factor for a party to be considered national. The party`s performance and vote share in multiple states are more important than its performance in just the capital city.

Option 3: This is the correct answer. A national political party is one that receives 4% of the total votes polled in four or more states. This means that the party has a significant presence and support across multiple states, indicating its national reach.

Option 4: Although a party may receive votes in all states, it needs to secure at least 4% of the total votes polled in four or more states to be considered a national party.

In summary, option 3 accurately defines a national political party as one that receives 4% of the total votes in four or more states.