10,000 people each enter a single entry sweep. Each person has 1 in 10,000 chance of winning.
Those same people each enter a 30 day – daily entry sweep. Each person will have 30 entries out of 300,000 entries, or 1 in 10,000. The odds are the same for each sweep.
The daily entry sweep will probably not have 300,000 entries as some people won’t or can’t take advantage of all their entry opportunities. This will make your odds slightly better on the daily entry sweep.