Television advertisement.
That would be television advertising.
Strategy is the single most important factor in a political campaign. The right strategy can survive a mediocre campaign, but even a brilliant campaign is likely to fail if the strategy is wrong.
money
joining a political party
if you take the second letter of each item..it spells out "what is the most costly item in the tower". Go to the hidden tower and find it
The most expensive item in a typical campaign budget is the media aspect. Television, posters, and other forms of campaigning through media are these.
volunteering for a political campaign engaging in civil disobedience
what is the most costly item in the hidden tower? http://www.thedailyneopets.com/articles/hidden-tower-items/
The 2004 presidential campaign was the most costly in history due to several factors, including the unprecedented amount of money raised by both major candidates, George W. Bush and John Kerry, through a combination of large donations, individual contributions, and significant spending by political action committees (PACs). Additionally, the rise of the internet and the increasing use of media advertising led to higher campaign expenses. The intense political climate surrounding issues like the Iraq War and domestic policies further amplified the need for extensive outreach and advertising, driving costs to record levels.
The most expensive item in a typical campaign budget is usually advertising and media buying, which includes placing ads on various platforms such as television, radio, print, and digital media. Advertising costs can make up a significant portion of the budget due to the need to reach a wide audience effectively.
The most costly items in a typical campaign budget today are media expenses. Television and radio ads are the most expensive. The signs that the candidate might place around a region can also become expensive.
The superlative for costly is "most costly" or "costliest."