Since you mention four, I assume you mean the unincorporated organized territories, there being four of those.
Puerto Rico has a territorial government that is set up essentially the same as a state government, with senators and representatives and a governor.
They send a "Resident Commissioner" to the US House of Representatives. The resident commissioner is nominally a nonvoting member (he's allowed to vote under certain circumstances, but it's basically symbolic and amounts to "you can vote as long as your vote doesn't actually affect the result."). They have no representation in the US Senate.
This basic pattern holds for the other territories as well, except that the US Virgin Islands and Guam have a unicameral legislature (there's no house of representatives, just a senate).
4
The term of a US Senator is six years. There is no limit to the number of terms a Senator can serve.
The senators of the United States serve for a 6 year term.
100 senators
6 years. Senators have more responsibleity.
two per state, so 100 senators serve
US Senators serve six year terms. There is no limit on how many terms they can serve. It is common for senators to serve for multiple terms.
The 33 members of the Ohio State Senate serve for 4-year terms. The 2 Senators who represent Ohio in the US Senate serve for 6-year terms, as do the US Senators representing all the other states in the Union.
Minnesota Senators serve a six year term. However, there is not a limit on the number of terms a Senator can serve.
Ohio has two senators because each state have two senators.
31 Senators and 150 Representatives serve in the Texas legislature.
Senators serve 4 year terms and House members serve 2 year terms, the House makes up the lower of the two congresses. Now each state has 2 senators in the US congress, but every 450k people get a member in the house of Representatives if i recall the math right. Hope this helps